Alphabetical list of file formats

Symbols

Ext. Description Used by### Temporary file program-dependent format#24 Printer data file for

24 pin matrix printer

LocoScript

#IB Printer data file LocoScript#nn Part of file image Long#SC Printer data file LocoScript#ST Standard mode

printer definitionsLocoScript

$$$ OS/2 archive file (i.e. archives.$$$, keys.$$$)

OS/2

$$$ Temporary file$? ZX Spectrum file in

HOBETA format$00 Pipe file DOS$DB Temporary file dBASE IV$ED Editor temporary

fileMS C

$O1 Pipe file DOS$VM Virtual manager

temporary fileWindows 3.x

)2( LHA archiver temporary file

LHA

 ??$ Backup file P-CAD ??_ Microsoft packed

fileExpand

 ?DK

Disk image Loaddskf.exe

 ?UT Nonpacked FTN mail (? - flavor)

FidoNet

 !ut Unfinished µTorrent download

µTorrent

___ Adinf table AdinfEX_ Compressed

executable fileNote: EX could be any first two characters in a file extension (e.g. BM_ for compressed bitmap (BMP), DL_ for compressed library, etc.) Files compressed using this method have been in use on Microsoft software CDs and floppies since around 1995.

 ?Q? Squeeze CP/M and MS-DOS~$~ Temporary file 1st Reader

~?? Old Backup files (.MNU to .~MN)

Resource Workshop (Borland Delphi)

~H Cardfile heap AZZ Cardfileμ Metrowerks

Codewarrior projectΠ THINK C project

Numbers

Ext. Description Used by0 Compressed harddisk data DoubleSpace

0B Printer font with lineDraw extended character set PageMaker001,

002, ...Split parts of a single whole file FFSJ, HJSplit, JJSplit,

split (Unix) (when using numeric suffixes)

1 Fax Many1 Roff/nroff/troff/groff source for manual page cawf2.zip

123 Spreadsheet Lotus 1-2-3 version 9 and version 97

15U Printer font with PI font set PageMaker16 SYSLINUX Splash Screen Graphic SYSLINUX, XnView

1ST Usually README.1ST text file1TX 1toX Logipole file2GR 286 Grabber File Win301 Fax Super FAX 2000 - Fax-

Mail 96386 Intel 80386 processor driver Windows 3.x386 Windows virtual device driver Win

3DMF QuickDraw 3D Metafile QuickDraw3DS 3D Studio Graphics format 3D Studio3DT Database in which the meta-data of a 3D

Topicscape is held3D Topicscape

3DV 3-D wireframe graphics by Oscar Garcia 3dv wireframe viewer3FX Effect CorelChart3GA Mobile Phone Audio (Samsung)3GP Mobile Phone Video3GR 386 Grabber File Win3T4 Binary file converter to ASCII Util34C$ Datafile 4Cast/24MD Musical file4SW 4DOS Swap File 4DOS4TH FORTH source code file ForthCMP - LMI Forth555 16 bit per pixel image file format (5bit per

component)Sierra Entertainment

602 Text (fairly simple format, plain text with binary control commands embedded within text lines and special formatting commands on dedicated lines)

Text602 text processor by Software602

668 Music (the mixing is always at 12048 Hz)669 Music (8 channels) The 669 Composer

6CM Music (6 Channel Module) Triton FastTracker75 75×75 dpi display font Ventura Publisher7z A compressed archive file format that supports

several different data compression, encryption and pre-processing algorithms

7-Zip

8 A86 assembler source code file85 85×85 dpi display font Ventura Publisher

8BF Adobe Photoshop compatibile filters/plugins890 ScanTitling subtitle files

8CM Music (8 Channel Module) Triton FastTracker8M Printer font with Math 8 extended character set PageMaker8U Printer font with Roman 8 extended character set PageMaker83p Executable program for TI-83 Plus Graphing

CalculatorTI Connect

89p Executable program for TI-89/89 Titanium Graphing Calculator

TI Connect

8xp Executable program for TI-83/84 Plus Graphing Calculator

TI Connect

91 91×91 dpi display font Ventura Publisher96 96×96 dpi display font Ventura Publisher

A[]

Ext. Description Used byA ADA source code fileA Library Unix

A## AlZip Compressed Files' piecesA11 Graphics AIIM image fileA80 Assembler language source for 8080AA,

AB, ...Split parts of a single whole file split (Unix)

AAC Advanced Audio Coding, a standardized, lossy compression and encoding scheme for digital audio

AAF AutoPatcher fileAAF Advanced Authoring Format, an advanced

media wrapper file for professional applicationsAAS Animation Play Script AAPlayAB6 Datafile ABStatAB8 Datafile ABStatABC Alembic - 3D geometry / models Many Computer Graphics

tools, see Alembic (Computer Graphics) for a list.

ABC Document ABC FlowCharter 1.0ABP Data ABComp compressed

ABP AVS Barcode Profile AVS Barcode SourceABF Adobe Binary Screen Font Adobe Systems SoftwareABK Automatic backup file CorelDRAWABM Image PALS album fileABM Album file (various programs)ABR Adobe Brush file for PhotoShop PhotoShopABS Abstracts (info file)ABS Data file AbscissaAC Project backup Audit Command Language

(ACL)ACA Project Project Manager WorkbenchACB Archive ACBACB see ACMBACC Program (DR-DOS - ViewMax) GEM / resident

ACCDA Data Microsoft Access Database Wizard (Open XML)

ACCDB Data Microsoft Access Database (Open XML)

ACCDE Data Microsoft Access Database Wizard (Open XML)

ACCDT Data Microsoft Access Database Template (Open XML)

ACCDU Data Microsoft Access Database Wizard (Open XML)

ACE Archive ACEACF Adobe Custom Filter for PhotoShop PhotoShopACL Project Audit Command Language

(ACL)ACL AutoCorrect List Microsoft OfficeACM Audio Compression Module add-on Win

ACMB Graphics fileACO Adobe Color Palette AdobeACT ACTOR source code file ACTORACT Animations Works Actor (Graphics cell) Animation WorksACT FoxDoc Action Diagrams FoxProACT Presentation Action!AD AfterDark screensaver module AfterDarkAD2 ADPCM 2-bit compressed voice file ZFAXAD3 ADPCM 3-bit compressed voice file ZFAXADA Ada source code fileADB Ada Package BodyADC Bitmap graphics (16 colors) ScanstudioADC Dictionary LingvoADD OS/2 adapter device driverADF Amiga Disk File unADF, UAE, WinUAE etc...ADG Data ADG 3D SceneADI Graphics file AutoCAD

ADI Database Index File Advantage Database ServerADICHT LabChart data acquisition file ADInstruments

ADL MCA adapter description library QEMMADM After Dark support file AfterDarkADM ADEM file format ADEMADI Database Memo File Advantage Database ServerADN Add-in Lotus 1-2-3ADR After Dark support file AfterDarkADS Ada Package SpecificationADT WoW geographical map location file Blizzard Entertainment games

(various)ADT Datafile for cardfile application HP NewWaveADT Abrechnungsdatentransfer, an xDT application Healthcare providers in

GermanyADT Dictionary LingvoADT Fax AdTechADI Database Table Advantage Database ServerADV GUS device driver Gf166.comADX Document Archetype DesignerADZ Amiga Disk Zipped (See Amiga Disk File) GZipAEP After Effects Project File Adobe After EffectsAES File encrypted using the Advanced Encryption

Standard (AES)AES Crypt (Windows, Mac, Linux, Java) and Crypt4All (Android)

AF2 Flowchart ABC FlowCharter 2.0AF3 Flowchart ABC FlowCharter 3.0AFI Truevision bitmap graphicsAFL Font file (for Always) Lotus 1-2-3AFM Datafile for cardfile application HP NewWaveAFM Type 1 font metric ASCII data for font installer ATM - manyAFP Shape palette ABC FlowCharterAFT Template ABC FlowCharter 3.0AFW Workplace ABC FlowCharter 3.0AGR ArcView ASCII gridAHK AutoHotkey script file AutoHotkey

AI Adobe Illustrator Artwork Adobe IllustratorAIF see AIFF

AIFC Audio Interchange File Format with Compression

AIFF Audio Interchange File Format Convert (c) VillenaAiM Asm Text Mode Image File The Ultimate DrawAIN Archive AINAIN Job schedule AutoInternAIO APL programming language file transfer

format fileAIR Adobe AIR installation package The Adobe AIR runtime

environment

AIS Array of Intensity Samples graphics file XeroxAIX Datafile for cardfile application HP NewWave

AKM "Akai Multitimbral" sample information file Akai S5000 and S6000 hardware samplers (MS-DOS-based) and compatible software samplers

AKP "Akai Program" sample information file Akai S5000 and S6000 hardware samplers (MS-DOS-based) and compatible software samplers

ALC Molecular coordinates Alchemy, RasMolALG Activity Log ARCSOLOALE Avid Log Exchange (used in film & video ) AvidALL Arts & Letters symbol and font files Arts & LettersALL Filelist w/ all files FRQViewALL Format file for working pages AlwaysALL General printer information WordPerfect for WinALO Almanac support fileALT Menu file WordPerfect LibraryALZ AlZip Compressed FilesAMD Maxum chromatograph offline database Siemens Maxum

ChromatographAMF Music (Advanced Module Format) DMPAMG Archive AMGCAMG System image file ACTORAML AutomationML AutomationML GroupAMR Audio format for mobile phones (Nokia,

SonyEricsson)AMS Adobe Monitor Setup calibration file PhotoShopAMS Music formatANI Animation cursors for Win Win95 - WinNTANI Animation IconAuthor

ANM Animation Deluxe Paint AnimatorANIM Trainz Animation specification file, for

example a steam locomotive's connecting rod movements, or water movement on a river or lake motion. (Obsolescent)

Trainz/Auran JET files

ANN Help Annotations Windows 3.xAnn Multi volume ARJ archive ARJANS ANSI character graphics (animation) file ANSViewANS ASCII text ANSI character set NewWave WriteAOL America On-line for Windows DLL WinAOS Add-On Software Nokia 9000AP Archive WHAPAP Datafile Datalex EntryPoint 90

APC Printer driver Lotus 1-2-3APD Printer driver Lotus 1-2-3

APE Monkey's Audio (Lossless) audio media playersAPF Printer driver Lotus 1-2-3API Adobe Printer Ink file for PhotoShop PhotoShopAPI Passed parameter file 1st ReaderAPI Printer driver Lotus 1-2-3APK Android Application AndroidAPL APL work space format fileAPL Support module used by Manugraphics APL

productsAPL EV-Dos Application FileAPM Authorware Macintosh AuthorwareAPP Add-in application file SymphonyAPP Application object file dBASE Application GeneratorAPP Application FoxProAPP Application and Application Bundle Mac OS XAPP Executable workflow / macro file AutomatorAPP Executable application file DR-DOS - NeXTstep - AtariAPP Generated application FoxProAPR Employee performance review Employee AppraiserAPW Authorware Windows AuthorwareAPX Appexpert database file Borland C++ 4.5AQF Analyzer Queries and Filters ActixAR Argon - for 3D Modeling Ashlar-VellumAR7 Archive AR7ARC Archive ARC - PKARC/PKXARC -

PKPAS - PKUNPAK - QUARK

ARC Archive SQUASHARC Nintendo proprietary archive format Various Nintendo gamesARD Map Holux - AlanARF Automatic Response FileARH Archivers definitions file DNARI Archive ARIARJ Archive ARJ - ARJZARK ARC archive CP/M port of ARC file

archiverARK Archive QUARKARK Managing your Money Archive FileARR Arrangement Atari CubaseART Gerber artwork Cadence AllegroART First Publisher, Designworks, Greenstreet

Draw graphic fileAll GST/Greenstreet Draw products

ART Graphics (scrapbook) Art ImportART Graphics format (Another Ray Tracer) PFS:1st publisher - Art Import

ARTX file format ArtisteerARTX file format belightsoft Text ArtARX Archive ARX

ASC ASCII text fileASC Transport armor file PGPASD Autosave file Microsoft WordASD Presentation AstoundASD Screen driver Lotus 1-2-3ASD Spectral Data Set ASD Inc. RS3 spectral

acquisition programASE Velvet Studio Sample AWAVEASE ASCII Scene Export 3D StudioASF Datafile (APL Shared File) STATGRAPHICS

(APL*Plus/PC)ASF Screen font Lotus 1-2-3ASF Advanced Streaming Format (Compressed

Windows audio/video)Microsoft Corporation

ASK SYSGEN answer file RT-11ASH Assembly language header file TASM 3.0ASI ASIC language source ASICASI Assembler include file Turbo C - Borland C++

ASM Assembler language source TASM, MASM, NASM, Yasm, FASM

ASMX ASP.NET Web Service Microsoft CorporationASO Assembler object (object-oriented) file Turbo AssemblerASP ASPECT source code file Procomm PlusASP Association of Shareware Professionals

OMBUDSMN.ASP noticeASP Active Server Pages of Microsoft.Net Microsoft Corporation

ASPX ActiveX Server Pages of Microsoft.Net Microsoft CorporationASS Amalgam Scene Specification Halo 2 Map EditorASS Advanced SubStation Alpha (Subtitles)AST Adobe Color Separation table for PhotoShop PhotoShopAST Nintendo proprietary music streaming format Various Nintendo gamesASV Autosave File MATLABASW Authorware Star AuthorwareASX Advanced Stream Redirector file, redirects to

an ASF file (see ASF)Microsoft Corporation

ASZ Skin AltDeskAT2 Auto template Aldus Persuasion 2.0AT3 Atrac 3 Sound/music file All Sony devices and

programs with the Atrac 3+ specification

ATM Adobe Type Manager data/infoATN Adobe Photoshop action Adobe PhotoshopATT AT&T Group GCGW

ATTF AramOS TypeAtor Text File AramOS TypeAtor 1.0 (Development State)

ATY Produced when an association type is exported by 3D Topicscape

3D Topicscape

AU Sun/NeXT/DEC Audio file AWAVE, GoldWaveAU Sound (audio) file Sun Microsystems - Convert

(c) VillenaAUD Audio file AudioRackAUP Audacity project file AudacityAUX Auxiliary dictionary ChiWriterAUX Auxiliary references TeX/LaTeXAUZ Ableton Live File Authorization File for Ableton

LiveAVA Publication AvagioAVB AntiViral Toolkit Pro BasesAVI Audio Video Interleaved animation file Video for WindowsAVR Audio Visual Research AWAVEAVS Audio Video Software AVS Video Editor (video

software)AVT AVATAR-coding files A3EAW Text file HP AdvanceWriteAW Proprietry Nintendo wave format Various home console

Nintendo gamesAWA Animations Works Accelerated Movie Animation WorksAWD Microsoft Fax At Work Document Microsoft Fax At WorkAWK AWK script/program awk, GNU Awk, mawk, nawk,

MKS AWK, Awka (compiler)AWM Animations Works Movie (as .AVI) Animation WorksAWS Data (APL Workspace) STATGRAPHICS

(APL*Plus/PC)Ax Directshow filter file format

AXF ARM Executable Image generated by the ARM tools

AXF "lightweight geodatabase" [1] ESRI ArcPadAXM Axmedis object Axmedis ToolsAZD Amazon Software Download Amazon Software DownloadAZW DRM enabled eBook All models of Amazon KindleAZW1 DRM enabled eBook with embedded fonts All models Amazon KindleAZW2 Program file All models of Amazon Kindle

excluding Kindle 1AZZ Data file AZZ Cardfile

B[]

Ext. Description Used byB&W Black and white graphics file atari - macB&W Mono binary screen image 1st Reader

B Batch list APPLAUSEB Grand Theft Auto saved game Any of the 3D Grand Theft

Auto games in either III or IV era.

B_W Black and white graphics file Atari - macB1N Both mono and color binary screen image 1st ReaderB30 Printer font (JLaser - Cordata) Corel Ventura PublisherB3D Blitz3D files Blitz3DB8 Raw graphics file (one byte per pixel) plane

twoPicLab

BA Binary Archive Scifer Archiver and Compression [External Header Mode]

BAC Compiled BASIC RT-11 BASIC-11BAD Bad file Oracle Corporation - manyBAD Animation file NovalogicBAD File which covers bad blocks on disk volume

(not to be moved)RT-11

BAK Backup fileBAL Music score Ballade

BALANCE Balance accounting sheet file BalanceBAP Blaze Audio Wave Information File BlazeAudio MadCap SoftwareBAR Horizontal bar menu object file dBASE Application GeneratorBAR Info Bar for GFX2EXE GFX2EXEBAR Broker Archive. Compressed file containing

number of other files for deployment.[1]IBM WebSphere Message Broker

BAS BASIC language source QuickBASIC - GW-BASIC - FreeBASIC

BAT Batch file MS-DOS, RT-11BB Database backup Papyrus Design Group

BBL Bibliographic reference file TeX/BibTeXBBM Brush Deluxe PaintBBP Playlist BassBoxBBQ BitBeamer Transfer Queue file BitBeamerBBS Bulletin Board System announce or text info

fileBBS Hudson-style messagebase FTN softwareBC! Unfinished download Unfinished BitComet

download (a BitTorrent client)BCF Card data Bingo Card CreatorBCH Batch process object file dBASE Application GeneratorBCH Datafile Datalex EntryPoint 90BCO Outline font description Bitstream Inc.BCP Borland C++ makefileBCT Backup dictionary ClarionBCW Environment settings Borland C++ 4.5BDB Bookends database BookendsBDC Dictionary Lingvo

BDEF Builder Definition Websphere Portlet FactoryBDF Adobe Glyph Bitmap Distribution Format Adobe SoftwareBDF Binary update file BUPDATE.EXE (c) TNT

Techn.BDF Bitmap Distribution Format font file X11BDF Datafile EgretBDM Videoclip AVCHD

BDMV Blu-ray Video Data Content file Media players / software that supports Blu-ray structure

BDR Border Microsoft PublisherBDT Dictionary LingvoBDT Behandlungsdatentransfer, an xDT

applicationHealthcare providers in Germany

BEF Bleck Encrypted FileBEZ Outline font description BitstreamBF Brainfuck sourcefileBF2 Bradford 2 fontBFC Briefcase Win95 Win95BFM Font metrics unix/FrameBFS Binary File StorageBFX Fax BitFaxBGA Bitmap graphicsBGI Borland Graphics Interface device driver Turbo C - Turbo PascalBH Blackhole data compression formatBI BASIC include file Visual Basic - FreeBASIC

BIB Bibliography (ASCII)BIB Database - not compatible with TeX format PapyrusBIB Literature database TeX/BibTeXBIF Binary Image Format b&w graphics file Image Capture boardBIK Bink video file (RAD Video)BIN Binary file, usually zero-start (.com analog)BIN SGI PowerflipBIN Text mode memory dump The Draw - TUD - ACiDDraw

- etc.BIO BioniX Wallpaper playlist file BioniX Wallpaper ChangerBIO OS/2 BIOSBIT Bitmap X11BK! Document backup WordPerfect for WinBK Faxbook JetFaxBK? Backup fileBKC Backup catalog Backup4allBKn Timed backup file for document window n WordPerfect for WinBKP Backup file Write - TurboVidion

DialogDesignerBKW Mirror image of font set FontEditBLD BLoaDable picture BASICBLD SYSGEN Build procedure file RT-11

BLEND Blender3D Project File BlenderBLG Backup Log ARCSOLOBLK Temporary file WordPerfect for Win

BLOB Unknown Steam (software) for WinBLP Blizzard Game Picture Blizzard Entertainment games

(various)BM BitMap graphics fileBM3 UIQ3 Phone backupBMD Nintendo proprietary 3D model file Various Nintendo gamesBMK Help Bookmarks Windows 3.xBMP OS/2 or Win graphics format (BitMap

Picture)QPeg - CorelDraw - PC Paintbrush - many

BMPW bitmap world-file - geo-references infoBMS Nintendo proprietary MIDI tracker format Various Nintendo gamesBMT Ami Pro Button Ami ProBNA Data Atlas BoundaryBNK Adlib instrument bank fileBNR Graphics Banner Banner - PosterBOK Shamela Library book Shamela Library ProgramBOO Book-format READIBMBOO Compressed file ASCII archive created by

BOO (msbooasm.arc)msbooasm.arc

BOO Boo programming language source file Boo Programming LanguageBOT Bot files, these go with JKB files Quake 3 EngineBPC Chart Business Plan Toolkit

BPOLY Data Prisms binary 3D objectBPP Backup application ClarionBPT Bitmap fills file CorelDRAWBPW Bitser proprietary encrypted password file Bitser password managerBR Script Bridge

BRD Eagle Layout FileBRD Tanzzle board file TanzzleBRD Cadence Allegro board file CadenceBRF Braille Braille embossers and

refreshable displaysBRK Fax Brooktrout Fax-MailBRK The Brake! Mailer REXX script The Brake!BRL CAD Ballistic Research Laboratory

CADBS Boot sector file SYSLINUXBS2 Archive BS2.EXEBSA Archive BSArcBSC Compressed Apple II file archive created by

BINSCIIBINSCII

BSC Database Source BrowserBSC Pwbrmake object file Microsoft FortranBSP GoldSource/Source engine map files Valve CorporationBSP id Tech map files id SoftwareBSS boot sector (DOS) file SYSLINUXBSS Casio Phone base PC-LINK

BST BiblioTex file (BiblioTex=bibliography file) TeXBSY Busy flag FTN softBTM Batch-to-memory (quick batch) 4dos -ndosBTN Makeover Button fileBTX backup of 4DOS batch files (_4INST.BTM) 4DOS

BUFR Binary Universal Form for the Representation of Meteorological Data

BUG Bugs and ProblemsBUN LucasArts Bundle FileBUP Backup fileBUT Button definitions Buttons!BUY Datafile format movieBVn Overflow file below insert point in Doc n WordPerfect for WinBWB Spreadsheet application Visual BalerBWR Beware (buglist) KermitBYU BYU Movie BYUBZ2 Archive bzip2BZM Map Blitzkrieg

C[]

Ext. Description Used byC-- C—language source Sphinx C--C C language source

Note that on case-sensitive platforms like Unix and with the gcc compiler the uppercase .C extension indicates a C++ source file.

Watcom C/C++, Borland C/C++, gcc and other C compilers

C Unix file archive COMPACTC++ C++ language sourceC00 Print file Ventura PublisherC01 Typhoon wave files AWAVEC32 COMBOOT Executable (32-bit) SYSLINUXC86 C source code file Computer Innovation C86CA Initial cache data for root domain servers TelnetCA? Borland packed and split file Borland InstallerCAB Win 95 packed file Win 95CAC dBASE IV executable when caching

on/off (see cachedb.bat)CAD Drawing BobCAD-CAMCAD Document Drafix Windows CADCAL Calendar file Windows 3.xCAL Spreadsheet format SuperCalc

CALS Computer Aided Acquisition and Logistics

CALS Support Raster Format

CAM Casio CameraCAN Fax Navigator FaxCAP Caption Ventura PublisherCAP Capture file ProComm - TelixCAS C + ASM language source Turbo CCAT Catalog CP Backup - dBASE IVCAT Device driver digital signature Microsoft WindowsCAT Stellarium Star Catalogue Stellarium

CATDrawing Drawing file of CATIA V5 CATIA V5CATPart Part file of CATIA V5 CATIA V5

CATProduct Assembly file of CATIA V5 CATIA V5CATS Combined source ATSCBA Source code Creative BASICCBC Fuzzy logic system CubiCalcCBL COBOL source code fileCBM Compiled bitmap graphics XLibCBR Comic Book Reader (RAR file) CDisplay and similarCBS MasterWord button bar configuration fileCBT COMBOOT Executable (incompatible

with DOS COM files)SYSLINUX

CBT Computer Based Training manyCBZ Comic Book Reader (ZIP file) CDisplay and similarCC C++ source code fileCC CC language source CC

CCC Bitmap graphics (native format) Curtain CallCCF Communications configuration file SymphonyCCF Color Chat file Color Chat FileCCH Chart CorelChart

CCITT CCITT Group 3 and Group 4 EncodingCCL Communication Command Language file IntalkCCO BTX Graphics file XBTXCCT Print Template BobCAD-CAMCD CD description DN

CDA CD-Audio Win95CDB Card database CardScanCDB Main database TCU Turbo C UtilitiesCDF Common Data FormatCDF Company Data File Nominal Small Business

Accounting softwareCDF Computable Document Format MathematicaCDF Cyberspace Description FormatCDF Graphics netcdfCDK Document Atari CalamusCDL CADKey CADL Language CADKeyCDM Disk Drivers NPA Novell NetWareCDM Music format (compressed)CDO Music notation Crescendo Music Notation

EditorCDR Vector graphics format (drawing) CorelDraw!CDT Corel Draw Template File CorelDraw!CDX Compound index file Visual FoxPro, Advantage

Database ServerCE Computer Eyes Conversion ArtistCE Main.ce The FarSide Computer

CalendarCEB Cont. Edge Bitmap Conversion ArtistCEF CA-Clipper Workbench Application CA ClipperCEF Export FileCEF Compact Embedded Font Adobe IllustratorCEG Bitmap graphics Tempra Show - Edsun

Continuous Edge GraphicsCEL Animation CEL 3D StudioCEL Graphics Autodesk Animator -

LumenaCF Configuration file imake

CFA Audio file Adobe Premiere ProCFC ColdFusion Component Adobe ColdFusionCFG Configuration fileCFL Chart CorelFLOWCFM ColdFusion Markup Language Adobe ColdFusionCFN Font data Atari CalamusCFO C Form Object internal format object file TCU Turbo C UtilitiesCFP Fax The Complete Fax PortableCFT CFast graphics file Disney Animation StudioCGA CGA display font Ventura PublisherCGI Common Gateway Interface script

CGM Computer Graphics Metafile vector graphics

A&L - HG - many

CH Clipper language header CA ClipperCH3 Chart Harvard Graphics 3.0CH4 Presentation Charisma 4.0CHD Font descriptor FontChameleonCHI ChiWriter Document ChiWriter - ChiviewCHK Recovered data DOS CHKDSKCHK Temporary file WordPerfect for WinCHL Configuration History LogCHM Compiled Help File Microsoft Windows, Help

Explorer ViewerCHML Encrypted Data File Krasbit Technologies,

Chameleon Imaging Workflow Software

CHN Data Ethnograph 3CHP Chapter file Ventura PublisherCHR Character set Turbo C - Turbo Pascal

CHT Chart Harvard Graphics 2.0 - SoftCraft Presenter

CHT CHeaT in any program/game manyCHT Interface file for ChartMaster dBASECHZ Archive CHARCCIF Caltech Intermediate Format graphics fileCIF Chapter information Ventura PublisherCIF Crystallographic Information File RasMol, JmolCiM C Text Mode Image File The Ultimate DrawCIX Database index TCU Turbo C UtilitiesCKB Borland C++ 4.x editor keystroke

mappingBCW.EXE

CL COMMON LISP source code fileCLA Source Clarion

CLASS Java class file JavaCLD Clipper debugger configuration file CA ClipperCLJ Clojure source code ClojureCLP Clip art graphics file Quattro ProCLP Clipboard file Windows 3.xCLP Compiler response file CA ClipperCLP Graphics format PCPAINT/PictorCLPI ClipAV Clip Information file for Blu-ray Media hardware / software

with Blu-ray structure support

CLPRJ ClassicLadder project file ClassicLadderCLR Color binary screen image 1st ReaderCLR Color definitions PhotostylerCLR Color scheme Boxer/2CLR Palette file for GIS formatCLS C++ class definition fileCLW MFC Class Wizard information Microsoft VC++CM Data file CraftMan

CMB Xtree for Windows Button Bar fileCMD Command dBASE - WaffleCMD Command Prompt batch file Microsoft Windows NT

based operating systemsCMD executable programs CP/M-86 operating systemCMD External command menu 1st ReaderCMD OS/2 batch/REXX file OS/2CMF FM-music file (Creative Music File)CMK Card Card Shop PlusCMM CMM script (batch) file CEnviCMP Bitmap graphics (Lead CMP compression)CMP Compressed data PKWare Inc. data

compression libraryCMP Header file for PostScript printer files CorelDRAWCMP Photofinish Calibration Map Photofinish

CMP User dictionary Microsoft Word for DOSCMRL Concise message routing language DOTGOCMS Content Management System Any Web BrowserCMU Carnegie Mellon University FormatsCMV Animation (CorelMove CorelDraw 4.0) CorelMove CorelDraw 4.0CNC CNC general program dataCND System generation conditional file RT-11CNF Configuration (program - printer setup) program - printer setupCNF Configuration fileCNV Temporary file WordPerfect for WinCNV Winword DLL used as part of an import

operation (CNV=converter)Microsoft Word

CO Cobalt - parametric drafting and 3D modeling

Ashlar-Vellum

COB Calgari trueSpace2 File FormatCOB COBOL source code fileCOD Code definition table UUPCCOD Datafile Forecast Plus - Microsoft

Multiplan - StatPac GoldCOD file uncluding CODES for any

program/gamemany

COD Printer code definition file Boxer/2COD Program compiled code FORTRANCOD Template source file dBASE Application

GeneratorCOD Videotext fileCOE Coefficient file Xilinx ISECOF Animation Control File Diablo IICOL Color palette Autodesk Animator - manyCOL Spreadsheet Microsoft MultiplanCOM Command (memory image of executable

program)DOS

COM Indirect command file (sequence of commands to be executed)

RT-11

CON Configuration file SimdirCON MSTS Consist file MSTSCPC Compressed image Cartesian Perceptual

CompressionCPD Script Complaints DeskCPF Fax The Complete FaxCPI ColorLab Processed Image bitmapped

graphics fileCPI MS-DOS codepage file MODE.EXECPL Control panel file Windows 3.xCPL Presentation Compel

CPMZ ConPro/Miradi Zipfile Miradi and ConProCPP C++ language source Watcom C/C++

CPP Presentation CA-Cricket PresentsCPR Knowledge Access GCGWCPS backup of startup files by QEMM (?)

autoexec.cpsCPT Encrypted memo file dBASECPT Mac file archive COMPACT PROCPT Template CA-Cricket PresentsCPZ Music text file COMPOZCR2 Raw image format Canon digital camerasCRA Advanced crack file (usually text)CRD Cardfile Windows 3.x - YourWayCRD Map Holux - AlanCRD Molecular coordinates CHARMM, RasMol

CRDOWNLOAD Google Chrome download in progress Google ChromeCRF Cross-reference Microsoft MASM -

Zortech C++, RT-11 CREFCRK Crack file (usually text)CRP Encrypted database dBASE IVCRS File Conversion Resource WordPerfect 5.1CRT Terminal settings information OracleCRU Compressed file archive created by

CRUSHCS C# source file C#

CSD Compact Shared Document Dream To RealityCSG Batch file (Submit) ISIS/wCSG Graph Statistica/wCSM Borland C++ 4.x precompiled header file BCW.EXECSP PC Emcee Screen Image file Computer Support

CorporationCSS Datafile CSS - Stats+CSS Datasheet Statistica/wCSS cascading style sheetCSV Adjusted EGA/VGA palette CompuShowCSV Comma Separated Values text file format

(ASCII)CTC Control file PC InstallerCTF Character code translation file SymphonyCTK CommonTime Key file CommonTime software

applicationsCTL Control file dBASE IV - Aldus SetupCTL BATCH control file (generated by

BATCH from .BAT file)RT-11

CTT BATCH Temporary file RT-11CTX Ciphertext file Pretty Good Privacy RSA

SystemCTX Course TeXt file some Microsoft online

guides

CTX document Creativyst Table eXchangeCUF C Utilities Form definition TCU Turbo C UtilitiesCUR Windows resource (cursor image file) Resource Workshop -

WRT - Watcom Resource Editor

CUT Graphics format (bitmapped graphics) dr. HaloCV4 Color file CodeViewCVP Cover page WinFaxCVS Graphics CanvasCVT Backup file for CONVERTed database

filedBASE IV

CVW Color file CodeViewCWEB C WebCWK Datafile ClarisWorks, AppleworksCXX C++ source code file Zortech C++CYS Cytoscape session file Cytoscape

D[]

Ext. Description Used byD D Programming Language source file DMD

D3V Video file Nintendo DS (with ARME, MMCF etc.)

D4D Data Draw 4D objectD4P Data Draw 4D Pro objectD64 Commodore 64 disk imageD88 Toshiba Pasopeia D88 disk image format A series of emulators of

Japanese computersDAA Direct Access ArchiveDAE COLLADA fileDAF Data file Digital AnchorDAT Maxum chromatograph chromatogram Siemens Maxum

ChromatographDAT LDraw (Sub)Part File, 3D Model LDrawDAT Document Microsoft Word Format

(old)DAT data RSNetWorx ProjectDAT Data file in special format or ASCIIDAT Database file Clarion (programming

language)DAT Norton Utilities disc image data. It saves Boot

sector, part of FAT and root directory in image.DAT on same drive.

Norton Utilities

DAT Optical disc image (can be ISO9660, but not restricted to)

cdrdao, burnatonce

DAT Video CD MPEG streamDAT Windows registry hive (REG.DAT Windows Microsoft Windows

3.11; USER.DAT and SYSTEM.DAT Windows 95, 98, and ME; NTUSER.DAT Windows NT/2000/XP/7)

DATS Dynamic source ATSDB$ Temperature debug info Clarion Modula-2DB$ Temporary file dBASEDB Database file Paradox - XTreeGold -

dbvista - Oracle - XoftSpySE - Windows thumbnail cache [2] [3]

DB Configuration dBASE IV - dBFastDB Multi config MEDB2 Database dBASE IIDB3 Database dBASE IIIDBA Database file Turbo Prolog - DataEaseDBA DarkBasic source codeDBC DataBaseContainer Visual FoxProDBD Business data Business InsightDBD Debug info Clarion Modula-2DBF Database file dBASE III/IV - Visual

FoxPro - dBFast - DataBoss - DBVista - CA-Clipper - Visual Objects - Alaska Xbase++ -

Advantage Database Server

DBG Debugger script DOS debug - Watcom debugger

DBG Symbolic debugging information Microsoft C/C++DBK Database backup dBASE IVDBL DIBOL source fileDBM Datafile DataEaseDBM Menu template DataBossDBO Compiled program dBASE IV

DBPro DarkBasicPro ProjectDBS Data file used by Managing Your MoneyDBS Database in SQL Windows formatDBS Datafile PRODASDBS Printer description file Microsoft Word,

Microsoft WorksDBT FoxBASE+ style memo FoxPro 2.xDBT Memo file for database w/same name dBASE IV - dBFastDBW Windows file DataBossDBX DataBeam GCGWDBX AutoCAD Database AutoCADDBX Archive File Outlook Express

DC CAD drawing file DesignCAD 3000 for Windows

DC6 Image file Diablo IIDCA Document Content Architecture text file IBM DisplayWriteDCC Animation Diablo IIDCD CAD Drawing File DesignCAD 3DMax for

WindowsDCF floppy disk image Disk Copy FastDCH Schematic Drawing file DipTrace Schematic

CaptureDCI Dreamcast Save File DreamcastDCL Delphi Control Library Borland DelphiDCM DCM music module AWAVEDCP OS/2 device code page OS/2DCS Bitmap graphics (CYMK format) QuarkXPressDCS Datafile ACT! Activity FilesDCT Dictionary: used by many programs with program

dependent formatClarion

DCT Spell checking dictionary Harvard Graphics 3.0 - Symphony

DCT DataBaseContainer Extension Visual FoxProDCU Delphi unit (compiled) Borland DelphiDCW Walter Machine Programing Walter Profile EditorDCX Multi-page PCX graphics (common fax format) Intel - SpectraFAXDCX DataBaseContainer Index Visual FoxProDD Macintosh file archive DISKDOUBLER

DDA Data GLBasic ASCII 3D object

DDB Bitmap graphicsDDB Digidesign Database File Digidesign Pro ToolsDDI Disk image DiskDupeDDP Device Driver Profile file OS/2DDS DirectDraw Surface file Microsoft Flight

Simulator, other Microsoft programs

DEB DEBUG script DOS DebugDEF Assembly header file GeoworksDEF Defaults - definitionsDEF Linker definition file TLink - WLink...DEM DemonstrationDEM Digital Elevation ModelDEM Graphics file VistaProDEM Vista DEM file Meta.exe VP3DES Ascii text parameter description AWAVE

DESKLINK Windows Explorer Desktop Control (commonly "Desktop (create shortcut).DESKLINK", 0 bytes). Uses a 'special' hidden file extension

(NeverShowExt flag inside the Registry), overriding the Windows Explorer option of showing/hiding file extensions.

desktop Desktop Entry freedesktop.orgDEV Device driverDEV SYSGEN handler build procedure RT-11DEV Dev-C++ project file Dev-C++DFD Data Flow Diagram graphic file ProsaDFF RenderWare model data (e.g. Grand Theft Auto

III and later)DFI Outline font description DigifontDFL Default program settings SignatureDFM Data Flow Diagram model file ProsaDFM Delphi form module Borland DelphiDFS Delight Sound FileDFV Printing form (Word) Microsoft WordDFX Micrografx Effects DLLDGN Graphics file MicroStationDGS DiagnosticsDH Dependency information for .ph Geoworks

DHP Dr. Halo PIC Format graphics file Dr. Halo II - IIIDHT Datafile Gauss

DI D Programming Language interface file DMDDIA Diagraph graphics file Computer Support

CorporationDIB Device Independent Bitmap rarely used Windows 3.0

bitmap; Win - OS/2DIC Dictionary (e.g. from WinWord)DIF Borland patch data file Borland patchDIF Data Interchange Format VisicalcDIF OS/2 V2.2 Display Information File OS/2DIF Output from Diff command - script for Patch

commandDIF SRCCOM, BINCOM output file RT-11DIG Digilink AWAVEDIG Sound Designer 1 audio file AWAVEDIP GraphicsDIP Watcom debug info processor WatcomDebuggerDIP PCB Drawing file DipTrace PCB LayoutDIR Dialing directory file Procomm PlusDIR Directory file VAX - CPS BackupDIR Movie MacroMind Director 4.xDIR Directory listing file RT-11DIS Distribution file VAX MailDIS Thesaurus CorelDrawDIZ Description file (Description In Zip)

DJVU DJVU Document Format, a format similar to PDF DJVU

but with higher compression rates at the same quality.

DKB Raytraced graphics DKBTraceDL Animation format (Italian origin) Display - DL Viewer

DLD Lotus 1-2-3DLF Dialogue Live Format Produced by Exstream

Dialogue and by Dialogue Live Editor

DLG Dialog resource script file Microsoft Windows SDKDLG Dialog resources DNDLG Windows SDK dialog editor data fileDLG Windows SDK dialog editor data fileDLL Dynamic-link library Windows 3.x - OS/2DLL Export/import filter CorelDRAWDLM Microsoft File Transfer Manager Microsoft File Transfer

ManagerDLP Data DAQLabDLS Setup Norton DisklockDMF Music format (Delusion Digital Music File) DelusionDMF DeleD filesDMG Apple Disk Image Mac OS X (Disk Utility),DMO Demo DeriveDMP Dump file (e.g. screen or memory)DMP DUMP utility output file RT-11DMS Amiga file archive DISKMASHERDNG Digital Negative (DNG), a publicly available

archival format for the raw files generated by digital cameras

At least 30 camera models from at least 10 manufacturers, and at least 200 software products

DNT data RSNetWorx ProjectDO Java servlet file Web browser (Various)

DOC A Document, or an ASCII text file with text formatting codes in with the text; used by many word processors

Microsoft Word and others

DOCM Microsoft Word 2007 Master document Microsoft Word 2007DOCX Office Open XML Text document Microsoft WordDOF Delphi project options file Borland DelphiDOG Screen file Laughing Dog Screen

MakerDOH Dependency information for .poh GeoworksDOR Roland Digital audio file RolandDOS External command file 1st ReaderDOS Network driver (e.g. pkt_dis.dos)DOS OS/2 V3 SVGA PMI-File Svga.exeDOS renamed system files (AUTOEXEC.BAT,

COMMAND.COM, Windows 95, 98, ME (dual-boot feature)

CONFIG.SYS,DBLSPACE.BIN, DRVSPACE.BIN, IO.SYS, MSDOS.SYS) of previous MS-DOS version

DOS Text file containing DOS specific infoDOT Line-type definition file CorelDRAWDOT Microsoft Word document template Microsoft Word

DOTX Office Open XML Text document template Microsoft WordDOX Text file MultiMate 4.0DOZ Description Out of Zip VENDINFODP Calendar file Daily PlannerDP Data file DataPhile

DPR Default project- and state-related information Borland C++ - Delphi - C

DPF Bareboard PCB CAD/CAM format UcamcoDPX Digital Moving Picture ExchangeDRP Web3D File Web3DDRS Display Resource WordPerfect for WinDRV DriverDRW Designer vector graphics file Designer - MicroGraphix

DS TWAIN Data Source Any twain-source must supply one xxx.ds file

DS1 Map file Diablo IIDS4 Vector graphics Micrografx Designer 4.xDSC Celestia Deep Space Catalog file CelestiaDSC Description fileDSC Discard file OracleDSD Database DataShaperDSF Data Storage Format Golden HelixDSF Delusion Digital Sound File DelusionDSK Desktop configuration BP - DN - BC++ - TPDSK Disk Drivers Novell NetWareDSK Logical disk file RT-11DSM Digital Sound Module DSIDSN Design Object System DesignerDSP Display parameters SignatureDSP Dynamic Studio Professional Module Dynamic StudioDSP Graphics display driver Dr. HaloDSP Norton viewer DLL WinDSP Visual Studio 6 project file Microsoft Visual StudioDSR Driver Resource WordPerfect for WinDSS Screensaver file DCCDSS Digital Speech Standard (Sound) Digital SoupDSS SQL Script for .Time Framework ExaktimeDST Tajima Embroidery Format EmbroidermodderDST WAIN (Scanner spec) data source DLL WinDSV Nintendo DS battery save DeSmuME, DraSticDSW Borland C++ 4.x desktop layout file BCW.EXE

DSY DAISY container file ADAKTA.EXEDT1 Tile file Diablo IIDT2 msn-emoticon paintDT_ Data fork of a Macintosh file Mac-etteDTA Data file Turbo Pascal - PC-File -

StataDTB Database Backup for .Time Framework ExaktimeDTF Database file PFS - Q&ADTL Django template language djangoprojectDTM DigiTrekker music module AWAVEDTO data Directory Toolkit outputDTP Desk Top Publishing Document Timeworks / greenstreet

Publisher3/ Greenstreet Publisher 4.5

DTP Page Magic 2.0 publication Page Magic 2.0 upgrades to Greenstreet Publisher

DTP Publication Publish-It! upgrades to Greenstreet Publisher

DTS Torque Game Engine model formatDVC Data Lotus 1-2-3

DVDPROJ iDVD project file iDVD (Apple iLife '08)DVI DeVice Independent document TeXDVP DESQView run-file DESQViewDVP Device parameter file AutoCADDW2 Drawing DesignCAD for DOS, &

DesignCAD for Windows

DWB Coryphaeus Software Designers Workbench CSDDWC Archive DWCDWD DiamondWare Digitized file AWAVEDWG Drawing AutoCAD, IntelliCAD,

PowerCAD, Drafix, etc.DWZ DVD MovieFactory for TOSHIBA Project File,

Designer vector graphics fileDesigner - MicroGraphix or TOSHIBA

DX Text file DEC WPS/DX format - DEC WPS Plus

DXF Dialogue Exchange Format Exstream DialogueDXF Drawing Interchange File Format vector graphics AutoCAD, IntelliCAD,

PowerCAD, etc.DXN Fax Fujitsu dexNETDXP SpotFire data TIBCO SpotfireDXP ISO creation project file CD Burner XP Pro

DYLIB Dynamic Library Mac OS-XDYN Data Lotus 1-2-3

E[]

Ext. Description Used by

E E language source code EE## EnCase Evidence File chunk EnCase Forensic Analysis SuiteE00 ArcInfo interchange file GIS softwareE2D 2-dimensional vector graphics file Editor included in JFireEAS Extended file attributes OS/2EAR Enterprise archive archiveEBA Source code Emergence BASICEBJ Error-checking object file GeoworksEBQ CITE standard electronic BQ

exchange fileEC Error checking preprosessed Goc

source codeGeoworks

EC Source code Ecere SDKECC Error-checking file dvdisasterECE Escenic Contentng Engine dynamic

pageEscenic

ECMS Status document ECMergeECMT Template document / Session ECMerge

ED5 EDMICS GCGWEDA Ensoniq ASR disk image AWAVEEDE Ensoniq EPS disk image AWAVEEDF European data format Medical timeseries storage filesEDF Exchequer Document Format IRIS SoftwareEDK Ensoniq KT disk image AWAVEEDL EDL PremiereEDQ Ensoniq sq1,2/ks32 disk image AWAVEEDS Ensoniq SQ80 disk image AWAVEEDT Default settings VAX Edt editorEDT Ensoniq TS disk image AWAVEEDT External editors definitions DNEDV Ensoniq VFX-SD disk image AWAVEEEB Button bar for Equation Editor WordPerfect for WinEFA Ensoniq ASR file AWAVEEFA Encrypted File ArchiveEFE Ensoniq EPS file AWAVEEFE Ensoniq EPS instrument file AWAVEEFK Ensoniq KT file AWAVEEFQ Ensoniq SQ1/SQ2/KS32 file AWAVEEFS Ensoniq SQ80 file AWAVEEFT Ensoniq TS file AWAVEEFT High resolution screen font ChiWriterEFV Ensoniq VFX-SD file AWAVEEFX Fax Everex EFaxEGA EGA display font Ventura PublisherEKA Internal data files Borland's EurekaEL ELISP source code file Emacs lisp

ELB Synergy/DE library

ELC Compiled ELISP code Emacs lispELFO ElsterFormularELI Archive ELIELT Event list text file Prosa

EMAIL Email file. NotepadEMAKE

RE language source code (maker) E

EMD ABT Extended MoDule AWAVEEMF Microsoft Enhanced MetafileEML Stationery Template Outlook ExpressEMU Terminal emulation data BITCOMENC Encoded file - UUENCODEd file Lotus 1-2-3 - uuexe515.exeENC Music EncoreEND Arrow-head definition file CorelDRAWENFF Extended Neutral File FormatENG Dictionary engine SprintENG English documentationENG Graphics file (charting) EnerGraphicsENV Envelope or EnvironmentsENV Enveloper macro WOPRENV Environment file WordPerfect for WinEOT Embedded Open-TypeEPA Award BIOS splash screen Award BIOS, XnViewEPD Publication Express PublisherEPI Document Express PublisherEPI Encapsulated PostScript graphic fileEPS Encapsulated PostScript (Graphics

format)CorelDraw - PhotoStyler - PMView - Adobe Illustrator - Ventua Publisher

EPUB Electronic Publication - (e-Reader format)

Okular (Linux) - Apple iBooks - Sony Reader - Adobe Digital Editions - Calibre (LMW)

EQN Equation filE WordPerfect for WinERD Entity Relationship Diagram graphic

fileProsa

ERL Erlang source code fileERM Entity Relationship Diagram model

fileProsa

ERR Compiler/linker error reportESH Extended Shell batch fileETH Document Ethnograph 3ETF Encrypted Text File. Used in some

security programs.ETW Proprietary format from EnterTech

for the MagicSing/Mic Karaoke product line.

Enter-Tech

ETX Structure-enhanced text for some ascii text browsers

EUI Ensoniq EPS family CD image AWAVEEVT Events descriptionsEVY Document WordPerfect EnvoyEWD Document Express Publisher for WindowsEX3 Device driveR Harvard Graphics 3.0EXB Audio File E-MU Systems Emulator X Sampler FileEXC Exclude file for Optimize (do not

process) (QEMM)QEMM

EXC REXX source code file VM/CMSEXE Directly executable program DOSEXF Excute file OnHand PCEXM MSDOS executable, system-

manager compliant (HP calculator)HP calculator

EXP Drawing File format Drawing ExpressEXP Melco Embroidery Format EmbroidermodderEXP Protected mode EXE by PharLap

SoftwarePharLap

EXP Exports Library File VisualStudioEXS Audio File Apple Logic Pro EXS instrumentEXT Extensions descriptions fileEXX Intermediate file by MsgPut IBM LinkWayEZW easyOFFER document file[4] easyOFFER by Reagency Systems Corp.EZF Fax Calculus EZ-Fax

F[]

Ext. Description Used byF Archive FREEZEF Fortran language source code file (in fixed form) Many Fortran compilers

F01 Fax perfectfaxF03 Fortran language source code file (in free form) Many Fortran compilersF2R Farandole Linear Module FarandoleF3R Farandole Blocked Linear Module FarandoleF4 Fortran IV source code file

F4A Flash Video F4V with only audio (see also SWF) Adobe FlashF4B Flash Video F4V audio book (see also SWF) Adobe FlashF4P Flash Video F4V with digital rights management

(see also SWF)Adobe Flash

F4V A container format for Flash Video that differs from the older FLV file format (see also SWF)

Adobe Flash

F77 Fortran language source code file (in fixed form) Many Fortran compilersF90 Fortran language source code file (in free form) Many Fortran compilersF95 Fortran language source code file (in free form) Many Fortran compilersF96 Fax Frecom FAX96FAC see FACE

FACE Usenix FACE graphics file

FAL Falcon script source FalconFAM Famtasia Famicom image format FamtasiaFAQ Frequently Asked Questions text fileFAR Music format (Farandole Composer Module) FarandoleFAS Macsyma compiled programFAX Fax (raster graphics in CCITT format) most Fax programsFBM Fuzzy BitmapFBW HP Backup and Recovery Manager HP BackupFC Spell checking dictionary Harvard Graphics 2.0

FCM Binary file patch file (forward compression) jlpak10.zipFCP Final Cut Pro project file Final Cut ProFD Declaration file Microsoft FortranFD Field offsets for compiler DataFlexFD Front Door' resource files FD

FDB Font Definition Block Ming libraryFDS fwNES Famicom Disk System image fwNESFDS Headerless Famicom Disk System imageFDW Form F3 Design and MappingFDX Screenplay Final DraftFE Data Surface Evolver 3D surface

FEB Button bar for Figure Editor WordPerfect for WinFEI Fatal Error Infotable GeoworksFES File produced when a fileless occurrence in 3D

Topicscape is exported to Windows3D Topicscape

FF Intelligont FIAS formatFF Outline font description Agfa Compugraphics

FFE Front Fareast Famicom image formatFFF Fax defFaxFFI Atech FastFont (AllType)

FFIVW File Format for the Interchange of Virtual WorldsFFT Dca/FFT Final Form Text text file (DisplayWrite)FFT DCA/FFT Final Form Text text file DisplayWriteFH3 Vector graphics Aldus FreeHand 3.xFH4 Vector graphics Aldus FreeHand 3.xFI Interface file Microsoft Fortran

FIF Fractal Image Format fileFIG Figure File MATLABFIL Table Data Audit Command Language

(ACL)FIL File template Application GeneratorFIL FilelistFIL Files list object file dBASE Application

GeneratorFIL Mirror. FIL is the name given to the saved FAT by

the mirror program included in some versions of DOS and in PCTools

MS-DOS -

FIL Overlay WordPerfect

FIL File which was moved to the Virus Vault by AVGFILE A generic Windows fileFILM Filmkey film file Filmkey PlayerFIN Print-formatted text file Perfect Writer - Scribble -

MINCEFIO Aldus PhotoStyler graphics filterFIO Image PALS viewer DLLFIT File Index Table WindowsNTFIT see FITSFIT Fityk Script Fityk

FITS Flexible Image Transport System astronomy softwareFIX Patch fileFKY Macro file FoxProFLA Source material for Flash applications (see SWF) Adobe Flash

FLAC Audio codec, Audio file formatFLAME Fractal configuration file Apophysis

FLB Format library PapyrusFLC Animation format FLIC >320x200 AAPlay - Autodesk AniProFLD Folder CharismaFLI Animation format FLIC 320x200 Autodesk AnimatorFLI TeX font library EmTeX

FLM Film Roll AutoCAD/AutoShadeFLP Flstudio project file Fruity Loops (FlStudio)FLT Data/file conversion filter (or overlay) Alsud, Microsoft WordFLT Filter file Micrografx Picture

PublisherFLT MultiGen FlightFLT Support file - graphics filter Asymetrix ToolBookFLX Animation formatFLX Compiled binary DataFlexFLV A container format for Flash Video (see also SWF) Adobe FlashFM Database FileMaker ProFM1 Spreadsheet format overlay Lotus 1-2-3 release 2.xFM3 Device driver Harvard Graphics 3.0FM3 Spreadsheet Lotus 1-2-3 release 3.xFMB File Manager Button bar WordPerfect for WinFMF Font or icon file IBM LinkWayFMK Makefile Fortran PowerStationFMO Compiled format file dBASE IVFMT Format file dBASE IV - FoxPro -

Clipper 5 - dBFastFMT Gate3 format fileFMT Style sheet SprintFMV Full Motion Video fileFN3 Font file Harvard Graphics 3.0FND Files searching properties Win95FNI FileNet Native Document FileNet

FNK FunkTracker music module AWAVE, FunkTrackerFNM Fannie Mae Residential Loan Data (RLD) format

for mortgage submission to DO/DUDesktop Originator

Fnn DOS screen text font - height nn pixels fntcol13.zipFNT Font file manyFNX Inactive font ExactFO1 Font file Borland Turbo CFO2 Font file Borland Turbo CFOG Fontographer Database File Fontographer3.5FOL Folder of saved messages 1st ReaderFON Log of all calls Procomm PlusFON Terminate phonebook Terminate - Terminator -

TelixFON Windows bitmapped font file Win

FONT Font data unixFOP Freedom of the Press graphic fileFOR Form WindowBaseFOR Fortran language source file manyFOT Installed Truetype font Windows Font InstallerFOX Foxbase executable (precompiled .prg) FoxBaseFP Final Page file FoxPro for DOSFP Tiff file TIFF/IT P1FP Video file DVICO/TVIX MPEG1

video fileFP3 Database FileMaker ProFP4 Database FileMaker ProFP5 Database FileMaker ProFP7 Database FileMaker ProFPC Catalog FoxProFPD TMT Pascal compiled unit TMT PascalFPM Configuration file FoxPro for MacIntoshFPT Foxpro memo field tables FoxProFPU Configuration file FoxPro for UnixFPW Floorplan drawing FloorPLAN plus for

WindowsFPW Configuration file Visual FoxProFPX FlashPix Bitmap Image File FlashPixFR? Packed mail FTN softwareFR3 Renamed dBASE III+ form file dBASE IVFRF FontMonger Database file FontMongerFRG Uncompiled report file dBASE IVFRL GP-Forth library GP-ForthFRM Registration or other formFRM Report file dBASE IV - Clipper 5 -

dBFastFRM Visual Basic Form Visual BasicFRO Compiled report file dBASE IV

FRP Form PerForm PRO Plus - FormFlow

FRS Screen Font Resource WordPerfect for WinFRT Additional (FPT) report description file FoxProFRT GP-Forth source file GP-ForthFRX Main (DBF) report description file Visual FoxProFRX Visual Basic binary program file Visual BasicFSA Applied Biosystems Genetic Analysis data file GeneScan

FSIM Simulation File Format LoudsoftFSL Form Paradox for WindowsFSM Farandole Composer WaveSample Farandole

FSPROJ

Habanero Firestarter project Habanero Firestarter

FST Linkable program dBFastFST Temporal database file GTKWave data file

FSTICK Temporal database file Flash JoystickFSX Data Lotus 1-2-3FTD Falcon dynamic template FalconFTM Fielded Text Meta - Contains schema/Meta for a

Fielded Text fileFielded Text

FTM Font file MicrografxFTX Declared Fielded Text Fielded Text

FTXT text Cloanto text documentFTP Configuration FTP Software PC/TCPFUK Map File Postal 2FW Database FrameWorkFW2 Database Framework IIFW3 Database Framework III

FWEB Fortran WEBFX On-line guide FastLynx

FXD Phonebook FAXitFXP Foxpro executable (precompiled .prg) Visual FoxProFXS FAX Transmit Format graphics file WinFaxFYF FileLoc FyTek, Inc.

G[]

Ext. Description Used byG Data chart APPLAUSE

G16 GoldED for DOS compiled config GOLDED.EXEG3D Glest model file G3D viewerG3P data Grand Prix 3 car physics Grand

Pix 3G8 Raw graphics file (one byte per pixel)

plane threePicLab - Cubicomb Picturemaker

GAF Globa Game Engine audio format Globa Game Engine

GAM Fax GammaFaxGAMEPROJ Gamesalad game project format GameSalad

GB Game Boy ROM NintendoGB1 Game Maker backup file (can also be

GB2, GB3, etc.)GBA Game Boy Advance ROM NintendoGBC Game Boy Color ROM NintendoGBL Genesis Bitmap Layout Genesis BitmapGBL Global definitions VAXTPU editorGBL Global module in Basic programs BasicGBP Genesis Bitmap Pattern Genesis BitmapGBS GBS meta data Generic Build Support

(GBS)GBR Gerber format PCB CAD/CAMGBR GIMP brushGC Savegame Star Wars: Battlefront II

Galactic Conquest save file

GC1 Lisp source code Golden Common Lisp 1.1

GC3 Lisp source code Golden Common Lisp 1.3

GCA IBM GOCA GCGWGCD Graphics ROBLOXGCD General content descriptor Wireless devicesGCD Generic Cadd drawing Generic Cadd, Visual

CaddGCF Game cache file Steam content delivery

systemGCH GNU preprocessed C++ header file GNU C++ compilerGCI Nintendo GameCube save file Nintendo GameCubeGCX Graph file Mac OS X GrapherGD3 Game Doctor Super NES ROM imageGDF General Data Format for Biomedical

SignalsBiomedical signal processing, Brain Computer Interfaces

GDF Dictionary file GEOSGDF Geographical Data Format Various mapping

softwareGDF IBM Graphics Data Format Legacy IBM systemsGDL Data ArchiCAD modelGDS McDonnell-Douglas ThingsGDT Gerätedatentransfer, an xDT

applicationHealthcare providers in Germany

GE GEcho config file GEchoGED GEDCOM Genealogy data exchangeGED EDITOR's native file format Arts & Letters

GED GoldED for DOS compiled config file GOLDED.EXEGED Graphics editor file EnerGraphicsGED Game Editor Data / project file Game EditorGEM Vector graphics file GEM - Ventura PublisherGEN Compiled template dBASE Application

GeneratorGEN Generated text Ventura PublisherGEO Geode GeoworksGEO GEOS specific file (application) GEOSGEO GoldED for OS/2 compiled config file GED2.EXEGEX GEcho config file GEchoGFB Compressed GIF image created by

GIFBLASTgifblast.exe

GFO SGI RadiosityGFT Font NeoPaintGFT GEM-translator font fileGFX Instant Artist graphics Files Instant ArtistGFX PCBoard @X-coded colorful text GFX2COM - GFX2EXEGHO Norton Ghost File (first file) SymantecGHS Norton Ghost File (split file) SymantecGHW GHDL Wave file GHDL/GTKWave data

fileGIB Chart Graph-in-the-BoxGIB GIMP animated brushGID Help index windows 95 helpGIF Compuserves' Graphics Interchange

Format (bitmapped graphics)QPeg - Display - CompuShow

GIW Presentation Graph-in-the-Box for Windows

GKH Ensoniq Disk Image (VFX, SD, EPS, ASR, TS)

Ensoniq

GKS Graphics Kernel SystemGL Animation format grasprt.exe, PVGL Animation GRASP GRAphical

System for PresentationGLB Global module in Basic programsGLM Datafile, KernelCAD model Glim, KernelCADGLO Global module in Basic programsGLS Datafile AcrossGLY Winword Glossary Microsoft WordGM6 GameMaker Editable file as of version

6.xGame Maker

GM81 GameMaker Editable file as of version 8.1.x

Game Maker

GMD GameMaker Editable file up to version 5.x

Game Maker

GMF CGM graphics file APPLAUSE

GMK GameMaker Editable file as of version 7.x or 8.x

Game Maker

GML GameMaker GML script file Game MakerGML Geography Markup Language File Geography Markup

LanguageGMOD Data Golgotha 3D modelGMP Geomorph tile map SPXGMS Ghost Mouse ScriptGMS Gesture and Motion File FormatsGMT Gene Matrix TransposedGMT data RFactor car physicsGMX GameMaker:Studio Editable File as of

1.xGame Maker

GOC Goc source code file GeoworksGOE GOES graphic fileGOH Goc header file GeoworksGP5 Guitar Pro 5 song Guitar Pro 5GP Geode parameter file Geoworks GlueGP4 data Grand Prix 4 car physicsGPH Graph Lotus 1-2-3/GGPK Omnigo program packageGPX GPS eXchange FormatGR2 Screen driver Windows 3.xGRA Datafile SigmaPlot

GrADS MetafileGRAFFLE OmniGraffle graph file

GRASP Graphical System for PresentationGRB T-FLEX CAD file Top SystemsGRB MS-DOS Shell Monitor file MS-DOS 5GRD Drivers for GRX (graphics library) GRX (c) Free Soft.

Found.GRDNT Image format used in the core of some

very obscure customized operating systems to represent gradients; see also SCTOR

GRE data Grenoble Thermal ellipsoids Plot Program

GRF Graph file Graph Plus - CharismaGRIB Gridded BinaryGRN Drivers for GRX (graphics library) GRX (c) Free Soft.

Found.GRP Group file Windows 3.x - PapyrusGRP Pictures group PixBaseGRY Graphics format (RAW GREYz)GS Script written in Google Apps Script,

used for automating tasks across online Google products

Google Apps Script

GS1 Presentation GraphShowGS3 data GameStarterGSA data Microsoft Office Groove

Space ArchiveGSD Vector graphics Professional DrawGSM Raw GSM 6.10 audio stream AWAVEGSP Geometer's SketchpadGSW Worksheet GraphShowGTA data Microsoft Office Groove

Tool ArchiveGUP PopMailGV GrandView outline file

GVO Data GFXFX Vector ObjectGWI Groupwise File Local saved EmailGXL Graphics library GenusGXK Secure Data encryption Format GalaxkeyGZ Archive GNU zip - WinZipNT

GZR data GunZ action replay

H[]

Ext. Description Used byH! On-line help file Flambeaux Help! Display EngineH! Pertext database HELP.EXEH-- C—language header Sphinx C--H Header file (usually C language) Watcom C/C++

H++ Header file C++HA Archive HA

HAL Data file Hyper Access Lite OS/2HAM Disk Drivers NPA Novell NetWareHAM Hold And Modify Deluxe Paint image fileHAP Archive HAP3HBC Compressed Archive File (Shrink Algorithm) HyperbacHBC Compressed Archive File (Shrink Fast

Algorithm)Hyperbac

HBE Compressed, Encrypted Archive File (Shrink & AES256-bit Encryption)

Hyperbac

HBK MathCAD handbook MathCADHC Header file

HCG Document HCLabHCGS Document HCLabHDD data disk imageHDD HotDisc Designer labelHDF Amiga Hard Disk ImageHDF Help file Help Development KitHDF Hierarchical Data File graphics file SDSC Image Tools

HDL Alternate download file listing Procomm PlusHDMP heap dumpfileHDR Datafile EgretHDR Message header text Procomm Plus - 1st ReaderHDR PC-File+ Database headerHDR SPOT image fileHDS Hierarchical Data SystemHDW Vector graphics Harvard DrawHDX Help index AutoCAD - Zortech C++HDZ Amiga Zip compressed Hard Disk ImageHEP Novell Help Librarian Data File Novell NetWareHEX Hex dumpHFI HP Font Info file GEMHGL Highlight groups definitions DNHGL HP Graphics Language graphics fileHH C++ header file

HHH Precompiled header file Power CHHP Help information for remote users Procomm PlusHI Game high scores table

HIN Molecule HyperChemHIS History of executing/viewing/ DNHIS Yard Information File FYM

HKM Stores sound in a bitmapped graphics fileHLB Help library VAXHLP Help file WinHelp, Help Explorer ViewerHLX Multi help file MultiEdit 5.0HLZ Multi packed help file MultiEditHMI Music format (MIDI)

HMM Alternate Mail Read option menu Procomm PlusHMP Music format (MIDI)HMP Hump Setup File - Obsolete as of version 2.4

(See SET and SWT files)FYM

HNC CNC program files Heidenhain (?) dialogHOF Hall Of Fame (game scores)HOM CAD Software Data File PLXHOME

HP Printout file for HP printers/plotters (HP/GL)HP8 ASCII text HP Roman8 character set NewWave WriteHPF HP LaserJet fonts PageMakerHPG see HPGL

HPGL Plotter file vector graphics (Hewlett-Packard Graphics Language)

AutoCad - Harvard Graphics

HPI Font information file GEMHPJ Help project Microsoft Help Compiler for

Windows - HC.EXEHPK Archive HPACKHPM Alternate Main menu for privileged users Procomm PlusHPM EMM text HP NewWave

HPM High Performance Map Quaestor 1.xHPP C++ header file Zortech C++ - Watcom C/C++

HPPCL Hewlett-Packard Printer Control LanguageHQX Archive (ASCII Mac) BINHEXHRF Graphics file (Hitachi Raster Format)HRM Alternate Main menu for limited/normal users Procomm PlusHRZ Graphics format SSTVHS2 Monochrome image PosteringHSC 2-op FM music HSC tracker - hscplay.exeHSH Disk image hash file DriveSnapshotHIS Handmade Software Inc. graphics file almost

JPEGImage Alchemy

HST History file Procomm PlusHTM see HTML

HTML Hypertext Markup Language (WWW) Netscape - Mosaic - manyHTX Hypertext fileHUS Husqvarna Viking Embroidery Format EmbroidermodderHWA Hollywood applet HollywoodHWD Presentation Hollywood DesignerHWP Hangul Word Processor Document Hangul (word processor)HWS Hollywood script HollywoodHXM Alternate Protocol Selection menu for all

usersProcomm Plus

HXS Microsoft Help 2 compiled help file Microsoft Windows, Help Explorer Viewer

HXX C++ header fileHY1 Hyphenation algorithms Ventura PublisherHY2 Hyphenation algorithms Ventura PublisherHYC Data WordPerfectHYD Hyphenation dictionary WordPerfect for WinHYP Archive HYPER

I[]

Ext. Description Used byI Preprocessor output file Borland C PreprocessorI SWIG interface file SWIG

IAK Internet Access Kit OS/2IAM Assembly file Autodesk InventorIAX Bitmap graphics (IBM Image Access

eXecutive)IAX data InstallAnywhere.NET projectIBG PDS graphic fileIBM Archive (Internal IBM only) ARCHDOSICA Bitmap graphics (Image Object Content

Architecture)

ICB Bitmap graphicsICC ICC configurationICE Archive Cracked LHA (old LHA)

ICFE IceFormula Equation Workspace Penguin GeorgeICFM IceFormula Math Workspace Penguin GeorgeICM ICC configurationICN ICON source code fileICO Icon file ICONEDIT.EXE; Microsoft

WindowsID Disk identification file

IDB IDA database IDAIDB VC++ Minimum Rebuild Dependency File Visual C++IDC IDA C language source IDAIDE Borland C++ 4.x IDE project BCW.EXEIDF MIDI instrument descriptionIDS IDA imported names format IDAIDW Vector graphics IntelliDrawIDW Drawing file Autodesk InventorIDX Index many - FoxPro; also unrelated

Quicken file formatIFD Form JetForm DesignIFF Interchange Format File (IFF) EA Software - Convert (C)

Villena - AmigaIFF Sun TAAC Image File Format SDSC Image ToolIFP Script KnowledgeManIFS Fractal image compressed file YuvpakIFS Iterated fractal system file IFS Creation Kit, ApophysisIFS Installable file system OS/2

IGES Initial Graphics Exchange SpecificationIGF Inset Systems GCGWIGC Flight tracks downloaded from GPS devices

in the International Gliding Commission's prescribed format

IHP Watcom help file whelp.exeIHS Inbound History Bink/+IIW Power Point Image Importer WizardIL hDC Designer Icon Lin dll format

ILB Data Scream TrackerILG data LaTeX Index Generation logILK Outline of program's format Microsoft ILink incremental

linkerIM Auran Jet indexed mesh file TrainzIM8 Sun Raster graphics fileIMA Mirage vector graphics EGO - Chart - AutumnIMG ADEX graphic fileIMG Disk Image NC 5.0IMG GEM bitmapped graphics file Ventura

IMG Image for Windows/Image for DOS Disk image

TeraByte, Inc. dba TeraByte Unlimited

IMG Vivid IMG fileIMI image Magellan Meridian mapIMI image Magellan eXplorist mapIMP Spreadsheet Lotus ImprovIMQ Image presentation ImageQIN Design II for Windows INput fileIN$ Installation file HP NewWaveIN3 Input device driver Harvard Graphics 3.0INB Test script Vermont HighTestINC Include file several programming

languagesIND Data Index dBASE IV

INDD InDesign Document Adobe InDesignINF Information text file (ASCII)INF Install scriptINF OS/2 hypertext help system file VIEW.EXEINF Type 1 LaserJet font information file soft font installers

INFO GNU info reader (output from Texinfo) info (Unix)INFO Icon Data (Amiga)INGR Intergraph Raster File Format

INI Initialization fileINK Pantone reference fills file CorelDRAWINS Data WordPerfectINS Ensoniq Instrument File EnsoniqINS Installation script 1st ReaderINS Instrument music file (Adlib)INT Borland Interface UnitsINT Program saved in Internal (semi-compiled)

formatSignature

INT Source of Borland interface moduleINX Index FoxbaseIO Archive CPIO

IOB 3d graphics database in TDDD format ImagineIOC Organizational chart Instant ORGcharting!ION 4DOS descript.ion file (file descriptions) 4DOS, VC, NDN, Total

Commander, XnViewIP Immortal Player file Immortal Player

IPA Apple iOS Application iPhone, iPod touch, iPadIPC Intellitec Program Configuration - used to

configure vehicle electronicsIntellitec

IPF Interchangeable Preservation Format SoftPresIPG iPod game file iTunes and iPodIPH Hi-Res Image InterPaintIPL Pantone Spot reference palette file CorelDRAWIPN Intecplan project Intecplan Business Plan

SoftwareIPS IPS Patching Format (International Patching

System)[citation needed]Rom hacking community

IPSW iOS firmware file iPhone, iPod touch, iPad, Apple TV

IPT Part file Autodesk InventorIPT MultiColor Image InterPaint

IRRMESH static irrMesh filesIRS Resource (WordPerfect) standard.irs WordPerfectIRT Data IRIT 3D model

IRTR Graphicon-2000 Interactive Real-Time PHIGS

ISD Spelling Checker dictionary RapidFileISH Archive ISH

ISMA Output Video file Islam Abusa'a SoftwareISO ISO-9660 table see: List of ISO image

softwareIST Digitrakker Instrument File AWAVEIT Impulse Tracker music file Impulse TrackerIT Settings intalk

ITF Interface file JPI TopSpeed PascalITL iTunes music libraryITN Itinerary file TomTom PNDsITT IconTweaker ThemeIV SGI Inventor

IV-VRML Inventor VRML FormatIVE OpenSceneGraph 3D modelIVI Image file ImmerVisionIVL Lensflare file ImmerVisionIVP Panorama file ImmerVisionIVU User Interface file ImmerVisionIW Presentation flowchart IconAuthor - HSC InterActive

IWA Text file IBM Writing AssistantIWB Information WorkBench ProdeoIWD Call of Duty Map - Game Data Archive Activision, Inc.IWP Text file WangIX data dtSearch index

IZT Izl binary token file IZL

J[]

Ext. Description Used byJ2C JPEG 2000 imageJAM Jam messagebase FTN softwareJAM Jam music score JamJAR Java archive JAR, Java Games and

ApplicationsJAS see JASC

JASC Graphics format (JASC)JAV see JAVA

JAVA Java source code fileJBD Datafile SigmaScanJBIG Joint Bilevel Image GroupJBX Project file Project Scheduler 4JCN JobClock.Net Synch FileJEF Janome Embroidery Format EmbroidermodderJET Fax Hybrid JetFaxJFF see JFIFJFIF JPEG File Interchange FormatJIF see JFIFJMS Music format (JMusic file) UltraForceJNLP Java Network Launching Protocol Java Web StartJOB Gravostyle engraving pattern file Gravostyle/GravographJOB QUEUE output file RT-11JOR Journal file SQLJOU Journal backup VAX Edt editorJP2 JPEG 2000 imageJPC Graphics Japan PIC

JPEG Joint Photographic Experts Group graphics file format

QPeg - FullView - Display

JPG see JPEGJPS backup of startup files

(AUTOEXEC.BAT,CONFIG.SYS,4DOS.INI) by installation of 4DOS (JP Software)

4DOS

JRE Java Runtime Environment JavaJRN JMP journal JMPJS JavaScript file script in HTML pages

JSON JSON (JavaScript Object Notation) AjaxJSONL

DJSON-LD, a JSON-based Serialization for Linked Data

JSP JavaServer Pages Dynamic pages running Web servers using Java technology

JTF Fax Hayes JT FaxJTF Graphics (TIFF file with JPEG compression)JVX Data JavaView objectJW Text document JustWrite

JWL Library JustWriteJZZ Spreadsheet Jazz

K[]

Ext. Description Used by

K2A Data Prince of Persia 3D objectK3D Description of macro language 3DS 3DSKAP Map Info Sea ChartKAR Music format (Karaoke) ITune 1000.CorpKAR Precompiled .prg for KARAT Rus. FOX+ 2.0KB Keyboard script Borland C++ 4.5KB Program source Knowledge Pro

KBASIC Source KBasicKBD Keyboard mapping LocoScript - Signature - Procomm

PlusKBM Keyboard mapping Reflection 4.0KCL Lisp source code Kyoto Common LispKDB KeePass 1.x database file KeePass

KDBX KeePass 2.x database file KeePassKDC Kodak Digital Camera (graphics) PhotoEnhancer by PictureWorksKEP (unknown) (unknown)KEX Kedit Macro File KeditKEY Datafile Forecast ProKEY Keynote presentation file Keynote (Apple iWork '08)KEY Keyboard macrosKEY OS/2 archive .key-file (i.e. OS2.KEY) OS/2KEY Security file e.g. Shareware Registration

infoKEY Keynote iOS devices, MacintoshKFN complex music format|[1] Karafun Karaoke(R)KFX Kofax Group GCGWKIT Power Chords drum kit file Power Chord

KMC KatzReview's MegaCrammerKML Kedit Macro Library

Keyhole Markup LanguageKeditGoogle Earth

KMY data KMyMoneyKMZ Keyhole Markup Language (Zip

compressed)Google Earth

Knn Database key file ClarionKNO Personal Knowbase data file Personal KnowbaseKO linux kernel object file linux kernelKPL source code PhrogramKPP Toolpad SmartPadKPS IBM KIPS bitmap graphicsKR1 Kurzweil 2000 sample file AWAVEKR2 Kurzweil 2000 sample file AWAVEKRZ Kurzweil K2000 File KurzweilKS Source code KonsolScript DocumentKS3 Data 3D Forgastest Editor objectKSM Pfaff Embroidery Format EmbroidermodderKTU Know The Unknown Online Service

PacksUnknownsoft

KWB Knowledge WorkBench ProdeoKYB Keyboard mapping FTP Software PC/TCP

L[]

Ext. Description Used byL LEX source code fileL Linker directive file WATCOM wlinkL LISP source code file

LA0 Datafile SCUMM index fileLAB Datafile NCSS - SOLOLAB Mailing labels Q+E for Microsoft ExcelLAN Erdas image fileLAN LAN Drivers Novell NetWare

LANG Language file Minecraft, SkypeLAS Lasso File Lasso Programming Language

FileLASSO Lasso File Lasso Programming Language

FileLAY Word chart layout APPLAUSELBG Label generator data dBASE IVLBL Label dBASE IV - Clipper 5 - dBFastLBM Graphics format (Amiga) Pic-view - Deluxe PaintLBM Linear bitmap graphics XLibLBO Compiled label dBASE IVLBR .LBR Archive for CP/M and MS-DOS using the

LU programLBR Display driver Lotus 1-2-3LBT Additional (FPT) label description file FoxProLBX Main (DBF) label description file FoxProLCF Linker Control File Norton Guides compilerLCH Chart IBM Works for OS/2LCK Lockfile ParadoxLCL Data (FTP Software PC/TCP)LCL Data FTP Software PC/TCPLCN Lection WordPerfectLCS Datafile ACT! History FilesLCW Spreadsheet Lucid 3-DLD Long Distance codes file Telix

LDA Absolute binary file (load image) PDP-11, RT-11LD1 Overlay file dBASELDB Data filer database IBM Works for OS/2LDB Overlay file Microsoft AccessLDF Data filer form IBM Works for OS/2LDF Library definition file Geoworks GlueLDT Labordatenträger, an xDT application Healthcare providers in Germany

LE DOS/4GW executable image DOS/4GW PM 32X DOS Extender

LES Lesson (check *.cbt)LEV Level file NetHack 3.xLEX Dictionary Microsoft Word - LexiconLFL LucasArts resource fileLFD LucasArts resource file LucasArts gamesLFT Laser printer font ChiWriterLG Logo procedure definitions LSRHS Logo

LGO Logo for header and footer SuperFaxLGO Startup logo code Windows 3.xLHA Archive LHA/LHARCLHW Amiga archive LHWARPLIB Library file several programming languagesLIC License file used by some programs to put

their license on diskLIF ArchiveLIF CA Clipper packed file CA Clipper installerLIF Logical Interchange Format data file Hewlett-PackardLIM Archive LIMITLIN Line types AutoCADLIS Listing VAXLIT Microsoft E-book file Microsoft ReaderLIT Web3D File Web3DLIX Log file (history) Audit Command Language

(ACL)LJ Text file for HP LJ II printer

LL3 LapLink III related file (document) LapLink IIILM Auran Jet LOD mesh table (text file to

control LODs)Trainz

LMP Doom lump (data file, commonly "demo" recordings)

Doom - Doom2

LNG Language definition fileLNK Linker response file .RTLinkLNK Linker scriptLNK Windows 95 shortcut Windows 95LNK Windows XP shortcut Windows XPLOD Load fileLOG Log file Numerous systemsLOM 3D Model Lock On: Modern Air CombatLPC Printer driver TEKOLRC Lyrics dataLRF Linker response file Microsoft C/C++LRF Unencrypted BroadBand eBook file Sony Librie eBook readerLRP Report IBM Works for OS/2LRS Language Resource File WordPerfect for WinLRX Encrypted BroadBand eBook file Sony Librie eBook reader

LSA Lightscape Technologies ASCIILSB Lightscape Technologies BinaryLSP LISP source code file Xlisp, AutoLISPLSS Spreadsheet Legato - IBM Works for OS/2LSS SYSLINUX Splash Screen Graphic SYSLINUX, XnViewLST Aus. BOM Hourly weather DataLST Filelist FRQViewLST Keyboard macro 1st ReaderLST List file (archive index - compiler listfile)LST Listing (e.g. source code)LST Map list Holux - AlanLST Spool file OracleLST SLP output file RT-11LTA Data LithTech ASCII 3D objectLTM Form (Lotus Forms) LotusLUA Lua script file Microsoft Visual C++, Notepad+

+LUW label data file Labels Unlimited for WindowsLUX 2D and 3D graphics data file Foliomap and SpectramapLUZ 3D graphics data file Spectramap CUDALWD Text document LotusWorksLWO Lightwave Object FormatLWP Word processor IBM Works for OS/2, Lotus

WordproLXF Lego Exchange Format Lego Digital Designer data fileLXO Luxology scene modo3D softwareLXT Temporal database file GTKWave data fileLY LilyPond Notation File LilyPond

LYR Lyrics (ASCII)LYT Document Layout file Adminsoft AccountsLZ Archive Lzip

LZD Difference file for binaries LDiff 1.20LZH Archive LHA/LHARCLZS Archive LARCLZW Archive LHWARPLZX Amiga Archive LZX

M[]

Ext. Description Used byM Mathematica Package File MathematicaM MATLAB M-File MATLABM2 WoW Model Object file Blizzard Entertainment games

(World of Warcraft/Warcraft series)M2TS MPEG 2 Transport Stream Various media playback devices /

software

M3U M3U playlist file Winamp, XMMSM3U8 Unicode version of M3U playlist

file (UTF-8)Winamp, XMMS

M4A Advanced Audio CodingM4r iPhone ringtone iTunes and iOS devicesM7P Multilizer 2007 and 2009

localization project fileMultilizer

M8M 8MAM8 Model FileMAFF Mozilla Archive Format Mozilla Firefox (with add-on)MAI Mail VAXMAK MakefileMAK Project file VB – VC ++MAN User guide (manual)

MANAGER Accounting data file Manager – free accounting softwareMAP Color palette fileMAP Format data Micrografx Picture PublisherMAP Linker map fileMAP Map file (usually created by

compilers)MAP Map Atlas MapMakerMAP Network map AccViewMAP Game map for Duke Nukem 3DMAR Assembly program VAX MacroMAR Microsoft ARchive MSN Explorer (possibly other

Microsoft products too)MAR Mozilla ARchive Mozilla Updater (used to house

binary updates to products)MAS SmartMaster set Freelance GraphicsMAT Data MATLABMAT Microsoft Access Table Microsoft AccessMAX MAX source code fileMAX Pfaff Embroidery Format EmbroidermodderMB Memo field values for database Paradox

MBK Multiple index file backup dBASE IVMBP Metadata .mobi (Mobipocket)MBR Master Boot Record File GRUBMBX Mailbox data Eudora/ZERBERUSMCA Minecraft "Anvil" world format Minecraft 1.2 and onwardMCC Configuration file MathcadMCD MathCad file MathCadMCF Font file MathcadMCF Photo book or photo calendar

layout fileFotoInsight Designer

MCF Multimedia Container Format (predecessor of Matroska)

MCI MCI command script Media Control InterfaceMCL Multi macro library Multi

MCL Cartesian manipulator for laser systems

MCP Application script CapsuleMCP Printer driver MathcadMCR Minecraft saved world "region"

fileMinecraft (up to 1.1)

MCW Text file MacWrite IIMDL GoldSrc Model File (Quake-

Based Engine)Valve Corporation

MDL Source Engine Model File Valve CorporationMDL Quake 1 Model File id SoftwareMDL Nintendo GameCube Luigi's

Mansion ModelNintendo

MD2 Quake 2 Model File id SoftwareMD3 Quake 3 Model File id SoftwareMD5 Doom 3 and Quake 4 Model File id SoftwareMD Archive mdcd10.arc

MDA Data Microsoft AccessMDA Microsoft Access system

databaseMicrosoft Access

MDB Microsoft DataBase Microsoft AccessMDF Media Descriptor File, binary

files in which the actual disc (CD/DVD) data is stored

Alcohol 120%

MDF Master Data File, a Microsoft SQL Server file type

Microsoft SQL Server

MDF Measurement Data Format, a binary file format for vector measurement data

automotive industry, developed by Robert Bosch GmbH

MDL Model 3D Design Plus or SimulinkMDL Spreadsheet CA-Compete!MDM Modem definition file TELIX

MDMP Mini dumpfileMDR Microdrive file ZX Spectrum emulator by g.a.lunterMDS Midi Session Sound Imp.MDT Data table Microsoft ILink incremental linkerMDX Multiple index file dBASE IVMDZ Text description of music

moduleCubic Player – Cross-View

ME MultiEdit configuration MultiEditME Text file READ.ME

MEB Macro Editor bottom overflow file

WordPerfect Library

MEC MECCA source MaximusMED Macro Editor delete save WordPerfect LibraryMED Music format MED/OctaMEDMEM Macro Editor macro WordPerfect Library

MEM Memory variable save file dBASE IV – FoxPro – ClipperMEM Memos datafile ClarionMEM Mnemosyne database Mnemosyne; other spaced repetition

softwareMEQ Macro Editor print queue file WordPerfect LibraryMER Macro Editor resident area

(vakioalue)WordPerfect Library

MES Macro Editor work space file WordPerfect LibraryMES MessageMET Document Omnipage ProMET Macro Editor top overflow file WordPerfect LibraryMET OS/2 graphics metafile PICVIEW.EXEMEU Menu group DOS ShellMEX Macro Editor expound file WordPerfect LibraryMEX MEX file (executable command) MatlabMF Metafont file TeX

MFA Source code file Multimedia Fusion 2 / The Games Factory 2

MFF MIDI Cakewalk, MTPro 4MFM Music format DMPMGF Font MicrografxMGF Materials and Geometry FormatMGX Designer 4.1 Drawing Designer 4.1MHT Web Archive Single FileMIB Snmp MIB fileMID Standard MIDI file music synthetizers, WinampMIDI See MIDMIFF Magick Image File FormatMII Datafile MicroStat-II

MIME Message in MIME format (RFC822)

miniUSF Nintendo proprietary MIDI file format for the Reality Signal Processor (Nintendo 64)

Nintendo 64 games

MIO MyInfo topic Milenix MyInfoMIS Mission, used by many gamesMIT Mitsubishi Embroidery Format EmbroidermodderMIX Object file Power CMK Makefile

MKE Makefile Microsoft Windows SDKMKG MakefileMKI Graphics format (Japan MKI)MKI Japanese graphics MAKIchan

formatMagView 0.5

MKS Data TACTMKV Matroska Multimedia Container Media Player Classic, Windows

Media Player, Matroska Splitter

ML3 Project Milestones 3.xMLB Macro library file RT-11, SymphonyMLI 3DS Materials Libraries 3D Studio

MLRAW Data Moonlight Creator RAW format 3D object

MLV LabVIEW MathScriptMM Text file MultiMate Advantage II, FreeMind

mind map file (XML)MMF Mail message file Microsoft MailMMM Multimedia movie file, RIFF

RMMP formatMacroMind Director 3.x

MMO Memo writer file RapidFileMMP Output video format from

Bravado boardMN MuPAD Pro Notebook Workspace file of MuPAD

(integrated in Matlab)MND Menu source AutoCAD Menu CompilerMNG Map DeLorme Map'n'GoMNT Additional (FPT) menu

description fileFoxPro

MNT Menu memo FoxProMNT Surface metrology or image

analysis documentMountainsMap

MNU Advanced macro file HP NewWaveMNU Menu AutoCAD Menu Compiler – Norton

Commander – SignatureMNU Microsoft Mouse menu (for DOS

apps)MNX Compiled menu file AutoCADMNX Main (DBF) menu description

fileFoxPro

MNY Account book Microsoft MoneyMO? Packed mail FTN softwareMOB Device definition file PEN WindowsMOBI eBook MobipocketMOD Modula language sourceMOD MODULA-2 source code file Claridiv id="MDZ"> MDZon

Modula-2MOD Module—used by Windows for

DLL which implement DOS support

Win

MOD Music format (Amiga module) DMP – ST – MDP – VPMOL MOD4WIN PlayList Mod4WinMOL MDL Molfile RasMolMOL2 Tripos’ Sybyl MOL2 Format SYBYL, RasMolMON SYSGEN monitor build

procedureRT-11

MON Monitor description ReadMail

MOP MOPAC input file MOPAC, RasMolMOV Animation format (Mac) QuickTimeMOV Movie file AutoCAD AutoFlixMP2 Mpeg audio file Winamp, xingMP3 MPEG audio stream, layer 3 AWAVE, CoolEdit(+PlugIn),

Winamp, many othersMP4 multimedia container format,

MPEG 4 Part 14Winamp

MPA MPEG audio stream, layer 1,2,3 AWAVEMPC Calendar file Microsoft ProjectMPC Musepack audio

MPEG multimedia containter format, video, audio

MPEG Player, Winamp

MPG see MPEGMPKG Multipackage installer script Mac OS XMPL MediaRack Midi Playlist MediaRackMPM MathPlan macro WordPerfect LibraryMPP Project file Microsoft Project

MPPZ MagicPlot project file MagicPlotMPQ Mo'PaQ Archive Blizzard gamesMPR Generated executable menu file FoxProMPR Multilizer 5.x and 6.x

localization project fileMultilizer

MPR Command & Conquer: Red Alert 2 map file

Red Alert 2

MPT Bitmap graphics (Multipage TIFF)

MPV View file Microsoft ProjectMPX Compiled executable menu file FoxProMPX Video formatMPZ Miradi Project Zipfile MiradiMRB Multiple Resolution Bitmap

graphics fileMicrosoft C/C++

MRC mIRC file mIRCMRK Windows User Benchmark Win95MRS Macro Resource file WordPerfect for WinMS Microsoft antivirus report MSAV

MSC Microsoft C makefileMSC management saved console[1] Microsoft; Microsoft MMC[2]

MSD Secure and Encrypted File mysecuredelivery/DownloadMSDL Manchester Scene Description

LanguageMSDVD Windows DVD Maker Project Windows DVD Maker

MSE Set file Magic Set EditorMSG Message base (e.g. HMB)MSG Message text file (ASCII) Microsoft OutlookMSG ZVoice digitized voice file

MSI Windows Installer Package Windows Operating SystemsMSO Microsoft Word OLE Web Page

Storage StreamMicrosoft Office

MSO Microsoft Outlook metadata for a Microsoft Word 2000 email attachment[3]

Microsoft Outlook

MSP Bitmap graphics file Microsoft PaintMSP Graphics format Microsoft Paint

MSPRODUCER Media Project Microsoft Producer (for Microsoft PowerPoint XP/2003) Project

MSQM data Microsoft Message QueuingMSN Project National Instruments for NI

MultiSim-Electronic Circuit simulator

MSS Manuscript text file Perfect Writer – Scribble – MINCE – Jove

MST Document MS TestMST Minispecification file ProsaMST Setup script file Microsoft Windows SDKMSW Text file Microsoft WordMSX CP/M archive MSXMTH Math file DeriveMTL WavefrontMTM Music format MultiTrackerMTS Master Track Pro Files MTPro 4MTS data EA Sports F1 series, car physicsMTV MTV Ray Tracer graphic fileMTW Datafile MinitabMU Quattro pro for DOS Menu

definition fileQuattro Pro

MUM MATLAB CAPE-OPEN Unit Operation Model file

Matlab

MUM Microsoft update file MicrosoftMUS Finale music document FinaleMUS Music format (MIDI in Doom)MUS Sound file MusicTimeMUZ Hover Game MIDI File Windows' Hover! Game[4]

MVF Stop frame file AutoCAD AutoFlixMVI Movie command file AutoCAD AutoFlixMVO Data Mad Virgin 3D objectMVW Log file Saber LANMWF Animation ProMotionMWS MWave DSP synths instrument AWAVEMXF Material exchange format (RFC

4539, SMPTE 377M)MXL PackRat 5.0 support DLLs PackRat 5.0MXM Material Maxwell Render

MXP Adobe Extension File Adobe Dreamweaver and Adobe Flash

MXP 3ds Max Configuration File 3ds MaxMXP MasterCook exported recipeMXT Data Microsoft CMYP Presentation MM Make Your PointMZ Binary-format Map MazeEdit

MZE Text-format Map MazeEditMZG Binary-format Map Collection MazeEditMZX Binary-format Encrypted Map MazeEdit

N[]

Ext. Description Used byNAM Name Space Modules Novell NetWareNAP Naplps file (VideoShow) EnerGraphics

NAPLPS North American Presentation Layer Protocol Syntax

NB Text file Nota BeneNB Wolfram Mathematica Notebook Mathematica

NBF Nokia Backup File Nokia Mobile PhonesNC Binary Data netCDF software

packageNC Instructions for NC (Numerical Control) machine CAMSNC Non-error checking preprosessed Goc source code Geoworks

NCC CNC (Computer Numeric Control) control file CamView 3DNCD NC Drill File (Excellon Format, printed circuit

board hole definitions)Most PCB layout software

NCD Norton Change Directory support file Norton CommanderNCP Re-volt Collision file Re-voltNDB Network database Intellicom - CompexNDS Nintendo DS ROM file used for Homebrew and

commercial (Game) files on DSNintendo DS

NDL Nodelist fileNDX Index file dBASE II - III - IV -

dBFastNEO Raster graphics file Atari NeochromeNES iNES ROM image formatNET Network configuration/info fileNEU Pro/Engineer neutral file format PTC Pro/Engineer

netCDF Network Common Data FormatNEW Ameco Embroidery Format EmbroidermodderNEW New infoNFF Haines Neutral File FormatNFF WorldToolKit Neutral File FormatNFO Folioview database

NFO Help format Nextpage FolioNFO Info file Compact NFO ViewerNG Hypertext Database Norton Guide

NGO NG linker object file NGMLNGS NG compiler source file NGCNIF netimmerse/gamebyro fileNIL NIL Icon Hear-It

NITF National Imagery Transmission FormatNK2 e-mail address autocomplete archive Microsoft Office

OutlookNL Norton Desktop Icon Library

NLM Netware loadable module Novell NetwareNLS National Language Support file MS-DOSNLX Form FormWorx 3.0Nmf Node Map File Used by SpicyNodesNnn Arj archive volumes up to 999 ARJNnn Netware unicode rule table (e.g. 1250_Uni.036) Novell NetwareNnn News about smth with ext. of ver. numberNnn RAR archive volumes up to 999 RARNOT NotationNOT Yard Notes File FYMNP Project schedule (Nokia Planner) Nokia PlannerNPI Source for DGEN.EXE interpreter dBASE Application

GeneratorNPJ Nile Project Game Mission EditorNRG Nero Disc Image File Nero Express / Burning

ROMNRW Nikon Coolpix RAW image NikonNSA media Nullsoft Streaming

AudioNSF database Lotus NotesNSF Music module NES Sound FileNSS Norton screensaver module NC - NDW Screen

SaverNST Music module Amiga Noise TrackerNSV media Nullsoft Streaming

VideoNSX Compound index file SuccessWare SIX 3.00NT Startup files Windows NTNT3 BAHN Layout file JBSS BAHNNTF database design template Lotus NotesNTH Nokia Theme File Nokia PC SuiteNTR Executable ASCII text file (strip header and

rename)netrun31.zip

NTS Executable ASCII text file (strip header and rename)

netsend1.zip

NTS Tutorial Norton

NTX Database index file Clipper 5NUF Message for new users on their 1st call Procomm Plus

NUMBERS Numbers spreadsheet file Numbers (Apple iWork '08)

NV NewViews DOS accounting database QW Page NewViewsNV2 NewViews accounting database QW Page NewViewsNWS Info text file (latest news) (ASCII)NXT Sound (NeXT format)

O[]

Ext. Description Used byO$$ Outfile SprintO Object file UNIX - Atari - GCC

O01 Typhoon vOice file AWAVEOAZ Fax NetFax ManagerOB Object cut/paste file IBM LinkWay

OBD Microsoft Office Binder MSOfficeOBJ Compiled machine language codeOBJ Object code Intel Relocatable Object ModuleOBJ Wavefront Object

OBJF Data Triangle strips objectOBR Object browser data file Borland C++OBS Script ObjectScriptOBT Microsoft Office Binder Template MSOfficeOBV Visual interface ObjectScriptOBZ Microsoft Office Binder Wizard MSOfficeOCF Object Craft File Object CraftOCD OCAD Map File OCADOCR Incoming fax transcribed to text FAXGrapperOCT Musical file PctalizerOCX New Custom Control's format in VB

4.0Visual Basic

OCX OLE custom controlODB OpenDocument database OpenOffice.org BaseODF OpenDocument formula OpenOffice.org MathODG OpenDocument drawing OpenOffice.org DrawODIF Open Document Interchange FormatODL Object Description LanguageODL Type library source Visual C++ODM OpenDocument master document OpenOffice.org WriterODP OpenDocument presentation OpenOffice.org ImpressODS OpenDocument spreadsheet OpenOffice.org CalcODT OpenDocument text document OpenOffice.org WriterOFD Form definition ObjectViewOFF Object File Format vector graphics file

OFF Object File Format vector graphicsOFM PostScript font description fileOFN Microsoft Office documents Microsoft OfficeOGG Ogg multimedia container formatOHB Source On Hand BasicOHS Outbound History Bink/+OIF QuickBase file formatOKT Music (8 channels) OktalyzerOKT Music format OktalyzerOLB Object library VAXOLD Backup fileOLI Text file OlivettiOLS

RConfiguration file olsrd

OMA Audio file Labelgate CD 2, MAGIQLIP2OMG Audio file Sony compressed audio file (ATRAC3)OMF Open Media Framework Avid Media ComposerOOF Data Outrage 3D Object Format (Descent)OOG Data WEBOOGL 3D objectOOM Swap file ShroomOPJ Origin Project File Origin version 4.1 and laterOPN Active options ExactOPT Options name used by many programs for

configuration informationOPT Delphi project options Borland DelphiOPT Optimize support file QEMMOPW Organization chart Org Plus for WindowsOPX Inactive options ExactORA Parameter file OracleORC Orchestra MIDI file CSoundORG Calendar file Lotus OrganizerORG Older Origin Project Origin versions 4 or earlierOTG OpenDocument drawing template OpenOffice.org DrawOTB O ver- t he-air b itmap graphicsOTF Subtitle font information for media

contentMedia players / software which support PGS subtitling

OTH OpenDocument HTML document template

OpenOffice.org

OTL Outline font description Z-Soft Type FoundryOTL Ventura Publisher's Type Foundry

Outline Editor formatOTL The Vim Outliner A vim pluginOTP OpenDocument presentation template OpenOffice.org ImpressOTS OpenDocument spreadsheet template OpenOffice.org MathOTT OpenDocument text document template OpenOffice.org WriterOTX Text file Olivetti Olitext PlusOUT Output file

OUT Design II for Windows Output fileOV1 Overlay file (part of program to be

loaded when needed)OV2 Overlay file (part of program to be

loaded when needed)TomTom Point of Interest

OVD Datafile ObjectVisionOVL Overlay file (part of program to be

loaded when needed)OVR Overlay file (part of program to be

loaded when needed)OXT OpenOffice.org extension OpenOffice.org

P[]

Ext. Description Used byP Database PROGRESS source code PROGRESSP PASCAL source code fileP Parser source code fileP Picture file APPLAUSEP Rea-C-Time application parameter

fileReaGeniX code generator

P0? Split archive UC2 SAS.EXEP10 Tektronix Plot GCGWP10 Certificate RequestP12 Personal Information Exchange "Crypto Shell Extensions"P16 Music (16 channels) ProTracker Studio 16P22 Patch file (Patch22) Patch22P80 PLM-80 sourceP86 PLM-86 sourcep2v Backupfile of a project in

eventplanning software plan2viz (windowsbased)

P3T PlayStation 3 Theme file PS3 Theme settings menuPA1 Worktable PageAheadPAC SBStudio II Package or Song SBStudio IIPAC STAD Image (graphics ?)

PACKPACKAGE Contents The Sims 2 - Spore - The Sims 3

PAD Automatic print definitions ProduaPAD Keypad definition TelematePAF For Personal Ancestral File data

filesPAGES Pages document file Pages (Apple iWork '08)

PAK Archive PakPAL Palette file Microsoft Draw - Win. Paintbrush -

manyPAL Palette file Diablo II

PAM PAM Portable Arbitrary Map graphics format

Netpbm

PAN Printer-specific file (copy to coreldrw.ink)

CorelDRAW

PAR Parameter file FractintPAR PARTS application Digitalk PARTSPAR Permanent output file Windows 3.xPAR Parity ArchivePAR2 Parity Archive v2PART Part of a download filePAS Pascal language source Borland PascalPAT Gravis Ultrasound Patch Convert (c) VillenaPAT Hatch patterns AutoCAD - PhotostylerPAT Vector fill files CorelDRAWPAT Pattern File PhotoshopPAT GIMP patternPB Fax FAXability PlusPB Phonebook WinFax ProPB Proboard Conf. files ProboardPB Setup file PixBasePB1 Document First Publisher for WindowsPBA Powerbasic BASIC source code GenusPBD Phone book FaxNOW! - FaxitPBD Molecule (protein data bank)PBI Powerbasic include file GenusPBI Profiler Binary Input Microsoft Source ProfilerPBK Microsoft Network Phone book MSNPBL Powerbasic library Genus

PBLIB Power Library PowerBASICPBM PBM Portable Bit Map graphics

formatJasc Media C

PBM Planar bitmap graphics XLibPBO Profiler Binary Output Microsoft Source ProfilerPBT Profiler Binary Table Microsoft Source ProfilerPC Text file containing IBM PC

specific infoPC3 Custom palette Harvard Graphics 3.0PC8 ASCII text IBM8 character set NewWave WritePCA Perfect Clarity Audio Sony Vegas ProPCB P-CAD database P-CAD, PCBExpress, and other

Printed Curcuit Board design software

PCB Artwork design file (Circuit board design)

Zuken CadStar

PCC Cutout picture vector graphics PC PaintbrushPCD Graphics format (Kodak Photo-

CD)

PCD Kodak Photo-CD Image graphics file (768x512)

hpcdtoppm

PCD Pfaff Embroidery Format EmbroidermodderPCF Pixel Coordination FormatPCH Patch filePCH Precompiled header Microsoft C/C++PCJ Multimedia authoring tool graphics

fileIBM's Linkaway-Live

PCK Pickfile Turbo PascalPCL HP-PCL graphics data file HP Printer Control LanguagePCM OKI MSM6376 synth chip PCM AWAVEPCM PCM AuthorwarePCM Pfaff Embroidery Format EmbroidermodderPCQ Pfaff Embroidery Format EmbroidermodderPCS Microsoft PowerPoint picture

packageMicrosoft PowerPoint - Microsoft ClipArt Gallery

PCS PCSurvey file PCSurvey by Softart - Land Surveying Software

PCS Pfaff Embroidery Format EmbroidermodderPCT Bitmap graphics file Macintosh b&w PICT1 - color

PICT2PCW Text file PC WritePCX PC paintbrush bitmap format QPeg - Display - ZSoft - PC

PaintbrushPDA Bitmap graphicsPDB Packrat 5.0 data file Packrat 5.0PDB container format (envelope) for

Palm OS databasesPalm OS, Garnet OS, Access Linux Platform, e-book

PDB debugging data Microsoft WindowsPDB Molecule (protein data bank)PDD Adobe Photoshop Elements Image Adobe Photoshop ElementsPDE Pathology Data ExchangePDE data PowerDesk EncryptedPDF Adobe's Portable Document Format Adobe Acrobat ReaderPDF Graphics file (ED-SCAN 24bit

format)PDF Package Definition FilePDF PCAD Database Interchange

FormatPdifin.exe - Pdifout.exe

PDF Print device information NetwarePDG Print Shop Deluxe data filePDI Portable Database ImagePDL Project Description Language file Borland C++ 4.5PDM Program DeskmatePDM PowerDesigner's physical data

model (relational model) file format

PowerDesigner

PDM Visual Basic (VB) Project Information File

Visual Basic

PDN Image file Paint.NETPDS PALASM Design DescriptionPDS Pds graphicsPDS Planetary Data System FormatPDS Pldasm source code file (hardware

assembly)PDV Printer driver PaintbrushPDW Document Professional DrawPEB Program Editor bottom overflow

fileWordPerfect Library

PED Program Editor delete save WordPerfect LibraryPEM Program Editor macro WordPerfect LibraryPEQ Program Editor print queue file WordPerfect LibraryPER Program Editor resident area WordPerfect LibraryPES Program Editor work space file WordPerfect LibraryPET Program Editor top overflow file WordPerfect LibraryPet package[5] Puppy Linux

PEX Proboard EXecutable file (Executed from PB)

Proboard

PFA PostScript Font FilePFA Type 3 font file (unhinted

PostScript font)PFB Adobe Acrobat document Adobe Acrobat ReaderPFB PostScript font Adobe Type Manager (ATM)PFC (Personal File Cabinet) contains e-

mail, preferences and other personal information

AOL

PFC Text file First ChoicePFK Programmable function keys XTreeProPFM Windows Type 1 font metric filePFS Database (PFS:FILE) - text file

(PFS:Write)PFS

PFT Printer font ChiWriterPG Page cut/paste file IBM LinkWay

PGD PGP cripted diskPGI Printer Graphics File device driver PGRAPH libraryPGL HP Plotter vector graphics formatPGM Graphics format (Portable

GrayMap)JASC Media C

PGM Program SignaturePGP Support file Pretty Good Privacy RSA SystemPGS Manual page man4dosPH Optimized .goh file GeoworksPH Perl header filePH Phrase-table Microsoft C/C++

PHD PolyHedra DatabasePHM Phone book DN - LyncPHN Phone list UltraFax - QmodemProPHO Phone database Metz Phone for WindowsPHP PHP filePHP3 PHP 3 filePHP4 PHP 4 filePHF Database File Nuverb Systems Inc: DonariusPHR Phrases LocoScriptPI2 Portrait Innovations High

Resolution Encrypted Image filePortrait Innovations Studio2 (proprietary)

PIC 123 Vector graphics format CShow - Alchemy - Paint (Pictor)PIC Bitmap graphics file Macintosh b&w PICT1 - color

PICT2PIC Lotus picturePIC PIXAR picture file SDSC Image Tool

PICT Macintosh PicturePIE GlovePIE script file GlovePIEPIF OS/2 graphics metafile PICVIEW.EXEPIF Program Information File Windows 3.x, 9x, NTPIF Vector graphics GDF format file

(IBM mainframe computers)PiM Pascal Text Mode Image File The Ultimate DrawPIPE PIPE-FLO project design file PIPE-FLO ProfessionalPIT Compressed Mac file archive

created by PACKITunpackit.zoo

PIV Pivot Stick Animator file Pivot Stick AnimatorPIX Alias image file SDSC Image ToolPIX Inset PixPJ Project CA-SuperProject

PJT Additional (FPT) project description file

FoxPro

PJX Main (DBF) project description file FoxProPK PacKed bitmap font bitmap file

(TeX DVI drivers)PK Peak file Cool

PKL Pickle file(for python(programming language) I/O)

PK2 Quake 2 data file id SoftwarePK3 Quake 3 data file id SoftwarePK4 Doom 3 and Quake 4 data file id SoftwarePKA Archive PKARCPKG Installer script Next, Mac OS X, Sony PS3PKG P-CAD database P-CADPKT Fido message packet FTN softwarePL Palette Harvard GraphicsPL Perl source code file

PL Prolog source code filePL Property List font metric file TeXPL1 Room plan 3D Home ArchitectPL1 PL/I source file PL/I compilersPL2 Palette Diablo IIPL3 Chart palette Harvard Graphics 3.0PLA Playlist

PLANTUML UML Diagram (also PU) PlantUMLPLB FoxPro library FoxProPLB P-CAD library P-CADPLC Add-in file (functions - macros -

applications)Lotus 1-2-3

PLC P-CAD database P-CADPLD PhotoLine Document PhotoLine image processingPLE Encrypted Chat Log Messenger Plus! Live Plugin - Log

viewerPLI PL/I source file PL/I compilers

PLIST Mac OS Property List, also used on iOS, NeXTSTEP, and GNUstep

Apple's Property List Editor

PLL Prelinked library CA ClipperPLM DisorderTracker2 music module AWAVEPLN Spreadsheet WordPerfect for WinPLP PlaylistPLP Messenger Plus! Sound Pack Messenger Plus! Live PluginPLS Playlist file WarpVision (OS/2)

PLSC Messenger Plus! Script Pack Messenger Plus! Live PluginPLSK Messenger Plus! Skin Pack Messenger Plus! Live PluginPLT HPGL plotter file vector graphics AutoCADPLT Output file for ploterPLT P CAD: Output file editor for

PCPLOT or PCPRINTP CAD

PLT Page Magic 2.0 paper format Page Magic 2.0PLT PalettePLT Table for .pll CA ClipperPLY Data PopMailPLY Presentation screen Harvard SpotlightPLY ZipPackPLY Polygon File Format or the

Stanford Triangle Format.3D Scanners

PLY2 Data PLY2 objectPM Auran Jet progressive mesh file

(obsoleted by IM and LM)Trainz

PM Perl modulePM Bitmap graphics Presentation ManagerPM3 PageMaker 3.0 data file PageMaker 3.0PM4 Document PageMaker 4PM5 Aldus PageMaker 5.0 publication Aldus PageMaker

PMC Graphics A4TECH ScannerPMI OS/2 V3 SVGA PMI-File Svga.exePMI PhatPad note PathWare

PMM Program file Amaris BTX/2PMP PhotoMorph Project PhotoMorphPN3 Printer device driver Harvard Graphics 3.0PNG Portable Network GraphicsPNF Pre-compiled Setup Information

fileMicrosoft Windows

PNM PBM Portable aNy Map graphics file

PNT Macintosh paintingPNT Pointlist segment FTN softwarePNT QWK reader pointer file MarkMail 2.xPOF Altera FPGA programming file

(External Flash)Altera Quartus

POH Optimized .goh file GeoworksPOL InnovMetric Software Polygon

Models FormatPOLICY Group Policy File Microsoft Windows

POLY Data Patrick Flynn's Poly Format - 3D object

POP Messages index PopMailPOP Pop-up menu object dBASE Application GeneratorPOT Microsoft PowerPoint templatePOV Raytraced graphics image Persistence Of VisionPOW Power Chords instrument/song file Power Chords

PP Amiga archive POWERPACKERPPA Microsoft PowerPoint Add-inPPB Button bar for Print Preview WordPerfect for WinPPD PostScript printer description filePPJ Premiere Project PremierePPK Archive (using for many

distributives)PPK

PPL PolaroidPalettePlus ColorKey device driver

Harvard Graphics 3.0

PPM Graphics format (Portable PixelMap)

JASC Media C.

PPO Preprocessor output CA Clipper 5.*PPP Publication PagePlusPPS Storyboard Personal ProducerPPS Microsoft PowerPoint Slideshow

(stand alone slideshow)PPT Microsoft PowerPoint Presentation Microsoft PowerPoint

PPTX MS Office Open-XML Presentation

Microsoft PowerPoint

PPSX MS Office Open-XML Auto-Play Microsoft PowerPoint

PresentationPR1 Packrat 4.0 data file Packrat 4.0PR2 Packrat 4.x data file Packrat 4.xPR2 Presentation Aldus Persuasion 2.xPR2 Printer driver dBASE IVPR3 PostScript printer driver dBASE IVPR3 Presentation Aldus Persuasion 3.xPRC container format (envelope) for

Palm OS databasesPalm OS, Garnet OS, Access Linux Platform, Mobipocket

PRC "Product Representation Compact", for embedding 3D data in a PDF file

CAE and CAM applications

PRD Printer driverPRE Presentation Freelance GraphicsPRE Settings Programmer's WorkBench,

Microsoft C/C++PRE Stork graphic filePRF CheckIt Pro v1.0 data file CheckIt Pro 1.0PRF Pixel Run Format graphics file Improces - FastgraphPRF Printer driver dBASE IVPRF Profiler outputPRG Program source code (e.g. Clipper

language)CA Clipper

PRG Program source dBASE IV - FoxPro - Clipper 5 - dBFast

PRG Program AtariPRI Printer definitions LocoScriptPRJ Borland C++ IDE project file BC.EXE - BCW.EXEPRJ Mkd (Unix command) Mkd project file to extract

documentationPRK SimPark Saved File SimParkPRM ParametersPRN Printer driver SignaturePRN Text file Lotus 1-2-3 - SymphonyPRN Usually printer output filePRO Profile used by many programs to store

configuration dataPRO Graphics profile file DOSPRO Proboard conf. file ProboardPRO Punch! Home Design File Punch! Home and LandscapePRO Prolog language sourcePRO PROLOG source code filePROJ Project File (Interface Builder) NeXT

PROPERTIES Java properties file Java applicationsPROTO Message specification Google Protocol Buffers

PRR The Perfect Resume data file Perfect ResumePRS Norton Viewer DLL file

PRS Presentation Harvard Graphics WinPRS Printer Resource e.g. fonts WordPerfect for WinPRS Procedure dBASE IVPRT P-CAD component P-CADPRT Part or Drawing CadkeyPRT Printer driver Dr. HaloPRX Compiled program FoxProPS Document in PostScript format adobe

PSA Archive (Pretty Simple Archive) PSA.OUT (GNU)PSB For big Photoshop files Photoshop DocumentPSD Design II for Windows Process

Simulation DiagramPSD Periscope Debbuger Def file PeriscopePSD Photoshop bitmap file Photoshop documentPSE see PSEG

PSEG Bitmap graphics IBM printer Page SEgmentPSF Outline PostScript printer font ChiWriterPSM Music format (Protracker Studio

Module)Protracker - MASI

PSM Symbol table of IDE Turbo PascalPSM 3D Model 18 Wheels Of SteelPSN Presentation file for Sound Script WinPSP image file with layers Paint Shop Pro (all versions)PSQ Premiere Sequence PremierePST Postbox file BMailPST Archive File Microsoft OutlookPSV PlayStation 2/PlayStation 3 saved

gamePlayStation 2 and PlayStation 3

PSW File w/ passwords for any program/game

many

PT Game crack Player ToolsPT Kodak Precition Color

Management SystemPT3 Device driver Harvard Graphics 3.0PT3 Template PageMaker 3PT4 Template PageMaker 4PT5 Aldus PageMaker 5.0 publication

templateAldus PageMaker

PTB Power Tab Software Power Tab EditorPTB Script PubTech BatchWorksPTF PlayStation Portable Theme file PSP Theme settings menuPTF Pro Tools Session File Digidesign Pro ToolsPTG Panasonic Title GraphicsPTL Premiere Title PremierePTM Macro PubTech BatchWorksPTM Music formatPTM Page Magic 2.0 template Page Magic 2.0

PTN Pattern CadkeyPTN Pattern CarveWright/CompuCarve DesignerPTR OS/2 cursor image file ICONEDIT.EXEPTR QWK reader pointer file QMailPTU Performer Terrain UtilitiesPTX Pro Tools 10 session file Avid Pro ToolsPU UML Diagram (also PLANTUML) PlantUML

PUB Package File Exstream DialoguePUB Page template Microsoft PublisherPUB Public key ring file Pretty Good Privacy RSA SystemPUB Publication Ventura Publisher - 1st PublisherPUD Warcraft II Map file Warcraft IIPUT Archive PUTPUT Graphics format WScanPVD Script InstalitPVK Private Key File Microsoft AuthenticodePVL Library InstalitPVM Texture Files PVMEditPVT Local Fidonet pointlist FTN softwarePW Text file Professional Write

PWF Workflow Files Mac OS X Server Podcast ProducerPWK Workspace File PolyWorksPWL Password ListPWP Text document Professional WritePlusPX Paradox 3.0 file Paradox 3.0

PXP 3DS Process file 3D StudioPXR Pixiar Picio AltamiraComposerPXZ Compressed file to exchange media

elementsPSALMO

PY Python script file Python interpreterPYC Compiled Python module Python interpreterPYD Python DLL Python interpreterPYI Cognos Powerplay ModelPYO Optimized compiled Python

modulePython interpreter

PYW Python Script Without Console Window

Python interpreter

PZD Default settings Pizazz PlusPZI Graphics format PZPPZO Overlay file Pizazz PlusPZP Palette Pizazz PlusPZS Settings Pizazz PlusPZT Transfer file Pizazz PlusPZX Swap file Pizazz Plus

Q[]

Ext. Description Used by

Q0 Q0 graphic fileQ3S Data Quick3D SceneQAG Quick Access Group Norton DesktopQAP Application Omnis Quartz - Omnis StudioQB Tony Hawk's Pro Skater series scripting files

QBB Quickbooks Backup FileQBE Saved query (Query By Example) dBASE IV - Quattro ProQBO Compiled query dBASE IVQBW Spreadsheet QuickBooks for WindowsQCH Qt Compressed Help Trolltech Qt AssistantQCP Mp3 extension on Motorola ringtones Motorola PhonesQDF Data file Quicken data fileQDK Backup of startup files created by Optimize QEMMQDn Data file - segment n Omnis Quartz- Omnis StudioQDV Graphics file Steve Blackstock GifferQDR Configuration file Q-DirQEF Query file Q+E for Microsoft ExcelQFX Quicken-specific implementation of the OFX

specificationIntuit Quicken

QFX Fax QuickLinkQG3 Data QuickMem GreekQHC Qt Help Collection Trolltech Qt Assistant

QHCP Qt Help Collection Project Trolltech Qt AssistantQHP Qt Help Project Trolltech Qt AssistantQIF Quicken Interchange Format Intuit QuickenQIZ World book quiz World BookQLB Quick library Microsoft C/C++QLC ATM Type 1 fonts script Adobe Type ManagerQLP Printer driver QuickLinkQM4 Options or services file QMail 4.x Mail DoorQPR Generated query program FoxProQPR Print queue device driver OS/2QPX Compiled executable QBE query file FoxProQRS Equation Editor support file WordPerfect for WinQRT Graphics format (QRT ray tracing)QRY Query dBASE IVQT QuickTime movie (animation)

QTVR QuickTime VR MovieQUOX Question Object Document Quobject Designer and Quobject

ExplorerQVD QlikView Document (Data) QlikView Compressed Database

FileQVW QlikView Document (View) QlikView Presentation FileQWK QWK reader message fileQXD Document QuarkXPressQXL Element library QuarkXPress

R[]

Ext. Description Used byR Ratfor fileR Script file R

R00, R01, ...

Part of a multi-file RAR archive

R2D Reflex 2 datafile Reflex 2R3D Red Raw Video (raw video data created with a

Red camera)Red Camera

R8 Raw graphics file (one byte per pixel) plane one PicLabR8P PCL 4 bitmap font file IntellifontRA Remote Access conf. files RA

RA0, RA1, ...

Part of a multi-file RAR archive

RAD 2-op FM music Reality AdLib TrackerRAD RadianceRAL Remote Access Language file Remote AccessRAM Ramfile RealAudioRAR Archive RARRAS Graphics format SUN RasterRAT Datafile (RATS)RAW HSI raw graphic fileRAW PCM Signed Raw Sound FileRAW QRT graphic fileRAY RayshadeRB Ruby Script file

RBF Datafile RbaseRBXM ROBLOX "model" ROBLOXRBXL ROBLOX "level" ROBLOX

RC Configuration file emacsRC Resource Compiler script file Microsoft C/C++, Borland

C++RC Resource Script Resource WriterRC UUPC configuration files UUPCRC Windows resource compiler script RC.EXE -Resource

WorkShop - OS/2RCG Netscape newsgroup file (netsc.rcg)RCT Roller Coaster Tycoon

RData Data file RRDF Compiled UIC source code Geoworks UI CompilerRDI Device-independent bitmap file (RIFF RDIB

format)RDP RDP connection Remote Desktop connectionRDX Datafile ReflexREC Archivation protocol ARCSERVEREC Datafile EpiInfo

REC Record file SprintREC Windows Recorder Macro File WinRecorderRED Path info Clarion Modula-2RED REDuced nodelist file T-Mail nodelist CompilerREF Cross-referenceREG OLE Registration file Windows 3.xREG Registration information or keyREL Foreground job relocatable file RT-11REM Remarks definition SourcerREM RemarksREP QWK reader reply fileREP Report file used by many applicationsREP Report Report Designer -

CodeReporter - DataBossREQ File request FTN SoftwareRES Compiled resource Microsoft C/C++, Borland

C++RES DBASE resources dBASE IVRES Windows compiled resource package WinREV Revision file GeoworksREX PharLab executable file (old format) PharLabREX Report definition OracleREX Rexx language source file RexxREZ Resource fileRF Sun raster graphics file

RFM Report ForMat (script for customized report) Nuverb Systems Inc: Donarius

RFT DCA/RFT Revisable Format Text file IBM DisplayWrite 4.0-5.1RGB SGI RGB image file (RAW) SDSC Image ToolRGX Symbol tables etc. info ReaGeniX code generatorRH Resource header file Borland C++ 4.5RH Windows resource file header RC.EXE

RHistory Command history logfile RRI Data Lotus 1-2-3

RIB Graphics (Renderman Interface Bytestream) 3D RealityRIC Fax RicohRIF RIFF bitmap graphics (Resource Interchange

File Format)Fractal Design Painter

RIP TeleGrafix Remote Imaging Protocol Maximus 3.0RIX Graphics (ColoRIX Image File) ColoRIXRL4 Bitmap graphicsRL8 Bitmap graphicsRLA Wavefront raster image file SDSC Image ToolRLB Data hgw.rlb Harvard Graphics WinRLC Graphics 1bit/pixel scanner outputRLD Norton Commander 5.0 temp file NC 5.0RLD OSIMapDef. RecLoad Definition

RLE Utah Run Length Encoded rasterfile graphic file SDSC Image ToolRLZ REALIZER source code file CA-RealizerRM RealMedia RealPlayer

RMB data RegistryMasterRMI Windows alternate synthesized sound format RIFF RMID formatRMK Make file CA Clipper - RMAKE

RMVB RealMedia Variable Bitrate RealPlayerRN XPL program for Nota Bene users

RNA Real Native Application FileRND Rendering Slide AutoCAD AutoShadeRnn Multi volume RAR archive RARRNO Runoff file VAXROL FM music Adlib Music File RolandROM Read Only Memory image in emulators, AONs,

etc.ROO CODASYL DBMS Database Root OracleRPB Data report file used by CP Backup CP BackupRPD Database RapidFileRPF AutoCAD pattern ACADRPL Text document ReplicaRPM Red Hat Package Manager Red Hat LinuxRPT Report file used by many applicationsRRD Reduced Resolution Dataset ESRI (GIS)RS Data file Amiga Resource -

ReassemblerRS Rust language sourceRS_ Resource fork of a Macintosh file Mac-etteRSC Resource file ViewMax - manyRSL Application - Project resolver oneRSL Resource Library used by PC Tools for

WindowsPC Tools - Win

RSP Response file (text file containing input expected by e.g. LINK)

RSP Response File OS/2RST reStructuredText DocutilsRSY FLEXIT Multishot Survey Raw Data file FLEXITRTF Rich Text Format text file (help file script) many - Microsoft Word

RTFD RTF-Packet NeXTRTL HP RTL graphic fileRTL Run-Time library Norton UtilitiesRTL Text fileRTP RTPatch software update package data file Pocket soft patchRTS Realizer executable fileRTS Runtime library file CA-RealizerRUL Echo-conference rulesRUN PC Tools for Windows batch file PC Tools

RUNZ pseudo-executable file, used in Portable Apps RUNZ Framework

and software installers for Super OSRUS Russian textRV Mobile pricelist data file Mobile

RVF TRichViewRVW ReviewRV Raw Wind Data

RWS Borland Resource Workshop symbol file Resource WorkshopRWS Resource Workshop data file Borland C++RWX Criterion RenderWareRWX MEME Shape FileRWX Script RenderWareRWZ Microsoft Outlook Rules Wizard File Microsoft OutlookRXD Reflex 1 datafile Reflex 1RZK File Crypt password file All text editorsRZX File Crypt encrypted file File Crypt (Akte Krypta,

Kriptirnik)

S

Ext. Description Used byS$$ Temporary sort file SprintS ASSEMBLY source code file unixS Multi macro file source MultiS MSTS Shape file MSTS

S19 Motorola ASCII format of executables

S1K S1000 Simnet FormatS3I Digiplayer/ST3 Sample File Digiplayer - ST3

S3M Music (16 channels) Scream Tracker 3.0 - DMPS7I Seed7 library / include file Seed7 interpreter and compilerSA? Packed mail FTN softwareSAB Saber file Star Wars: Jedi Knight Jedi

AcademySAF see SAIF

SAFE SafeIT EncryptedSAIF Spatial Archive Interchange

FormatSAL Datafile SORITECSAN LucasArts' SMUSH/INSANE

animationSAM Ami Pro data file Ami ProSAM Text file Samna - Lotus Ami/Ami ProSAP Atari SAP music formatSAR Archive SARSAT ACIS

SATS Static source ATS

SAV Backup file (saved file)SAV ConfigurationSAV Executable RT-11SAV SPSS "System File" PSPPSAV Saved game state Spider Solitaire (Windows)

SAVER Screensaver Mac OS XSB Audio file (signed byte)SB Raw Signed Byte (8bit) data AWAVESB Raw Signed PCM Byte 8bit data AWAVESB Scratch project Scratch

SBD Storyboard Storyboard EditorSBH Header ScriptBasicSBI Sound Blaster Instrument file

(Creative Labs)SBK Emu SoundFont Bank (AWE32

Bank)Convert (c) Villena

SBL Stony Brook Pascal library SB PascalSBP DML program Superbase 4SBR Support file Source BrowserSBT Notes related to record Suberbase 4 WindowsSC Display driver Framework IISC PAL script ParadoxSC Script Borland ParadoxSC3 Renamed dBASE III screen mask

filedBASE IV

SC3 Screen device driver Harvard Graphics 3.0SC3 Saved City SimCity 3000SC4 Saved City SimCity 4SC4 Game Scenario RollerCoaster Tycoon

Deluxe/Expansion PackSC6 Game Scenario RollerCoaster Tycoon 2SCA Datafile SCASCC Text fileSCD SCODOL film recorder (Scan

Conversion Object Description Language)

SCODOL

SCF Standard Chromatogram Format DNA Baser AssemblerSCF Standard Chromatogram Format Staden packageSCF ? SimAnt or SimTown ??SCF Windows Explorer Command (e.g.:

show desktop.scf)Windows Explorer

SCF Multimedia show ScoreMakerSCF Spelling checker configuration file SymphonySCH Project schedule Schedule PublisherSCH Circuit Design Schematic P-CAD - Orcad - Protel

SchDoc Circuit Design Schematic Protel - Altium DesignerSCI Fax SciFax

SCI System Configuration InformationSCM Scheme source code fileSCM Schematic file (Circuit Diagram for

PCB design)Zuken CadStar

SCM StarCraft missionSCN SCeNe RTraceSCN Screen file KermitSCO High scoreSCP Script BITCOMSCR Any other screen systemSCR DEBUG source code file DOS DebugSCR Forth screen (source) file ForthSCR Screen - screen snapshot dBASE IV - Procomm PlusSCR Screen font LocoScriptSCR Screen saver Windows 3.xSCR Screen snapshopSCR Script file source TeleMate - Kermit - 1st ReaderSCT Additional (FPT) screen

description fileFoxPro

SCTOR Raster graphics format used by some very obscure custom operating systems

SCX Chart Stanford ChartSCX Graphics format ColoRIXSCX Main (DBF) screen description file FoxProSCX StarCraft: Brood War scenario StarCraft: Brood WarSCY Security file ReaGeniXSD Sound Designer I audio file AWAVESD7 Seed7 source file Seed7 interpreter and compilerSDA Fidonet's Software Distribution

Network file archive descriptionSDC Video DigimaxMaster - Samsung NV3SDC Synopsys Design Constraints Electronic Design Automation

ToolsSDF Microsoft SQL Server Compact

Edition database fileSDF Flight data microdrones GmbHSDF Source definition file SourcerSDF System Data Format file (fixed

length ASCII text)SDI Software Distribution Network

Info fileSDK Roland S-550/S-50/W-30 Disk

ImageSDL Alias Wavefront Scene Description

LanguageSDM Signed Differential Mapping brain Signed Differential Mapping

maps and/or distributionsSDML Spacial Data Modeling LanguageSDN Software Distribution Network

compressd file archivepak251.exe

SDR SmartDraw File SmartDraw ProSDS MIDI Sample DUMP Standard FileSDS Self Defining Structure provides

for N-dimensional very large datasets using HHCode

geographic information systems and relational database management systems

SDTS Spatial Data Transfer StandardSDW Ami Draw Symbol FileSDX Sample DUMP Exchange FileSEA Self-Extracting compressed

Macintosh file ArchiveSEC compressed fileSEC Diskreet encrypted file DiskreetSEC Secret key ring file Pretty Good Privacy RSA SystemSEC Secured animation file Disney Animation StudioSED Self extraction directive file IExpressSEN Scifer Archive Format (Internal

Header Mode)SEP Printer separator pageSEQ ABI Text Sequence Applied BiosystemsSEQ Atari animation fileSEQ Video Tiertex video sequenceSEQ Sequential Instruction File Bubble ChamberSES Session info Clarion Modula-2SES Multitrack Audio Session info Adobe AuditionSET Configuration file 1st ReaderSET Driver sets created by Install SymphonySET Extension used by Norton Backup

and CPS Backup for setup infoNorton Backup - CPS Backup

SET Hump Assignments File FYMSET Setup options fileSET YVD card set file YVDSF IRCAM Sound File CSound package - MixView sound

sample editorSF JAR Digital SignatureSF WPS attribute storage (OS/2

WorkPlace Shell) wp_root.sfOS/2 WorkPlace Shell

SF2 Emu SoundFont Bank v2.0 file AWAVESFB Configuration file emacsSFB HP Soft font (obsolete under

Windows)SFD SoundStage Data file AWAVESFF Standard Flowgram Format DNA Baser SFF Workbench toolSFF Scene File Format

SFI Graphics SIS FramegrabberSFI Printer font (HP LaserJet

landscape)Ventura Publisher

SFL PCL 4 bitmap font (landscape) landscape - Intellifont - Ventura Publisher

SFL Sound file Sound Forge and ACID ProSFN Font SPXSFO Bitstream font file - fontware

formatSFP PCL 4 bitmap font portrait - Intellifont - Ventura

PublisherSFR Sonic Foundry Sample Resource AWAVESFS PCL 5 scalable font file IntellifontSFT Screen font ChiWriterSFX Renamed dBASE III screen mask

filedBASE IV

FX SFX (self-extracting archives) script

RAR

SG1 Graphics Stanford GraphicsSGF Document with graphics StarwriterSGF Smart Game Format Many board gamesSGI Graphics file IRIS - Silicon GraphicsSGP Statistics STATGRAPHICS PlusSGT Save/get keyboard macro SignatureSH ASCII archive SHARSH Unix shell script Unix shell interpreterSH3 Presentation Harvard Graphics 3.0

SH3D Sweet home 3d file Sweet home 3dSHAR Archive UNSHAR (Unix)SHB Background CorelShowSHG Segmented Hyper Graphics Microsoft's shed.exe, JGsoft's

Hotspot Builder, EC Software's Help and Manual

SHK Apple II archive SHRINKITSHM Shell macro WordPerfect LibrarySHP Shape file and sdiv id="PYI">

PYIource file for text fonts

ESRI shapefile

AutoCAD

ArcGIS

SHR see SHARSHT HTML format for WWW NetScapeSHW Presentation Harvard Graphics 2.0 - CorelShowSHW Slide show WordPerfect PresentationsSHX Shape entities

ESRI shapefile

AutoCAD

ArcGISSIB Sibelius file Sibelius 1-5

SID Sound Interface Device file format SIDplayer, SIDplay, sidplay2 /wSIF Setup Installation Files info Windows NT SetupSIG Current program settings SignatureSIG Signature file ThunderByte AntiVirus - PopMailSIK Backup file (Sicherungskopie) Microsoft WordSIM Simon document file - Simon

instruction software editorSIS symbian fileSIT Archive (Macintosh) STUFFITSKP Google SketchUp fileSKY SYLK Spreadsheet file (used by

Multiplan)SL S-Lang source code file

SLB P-CAD library (symbols) P-CADSLB Slide library AutoCADSLC SALT (script from Telix) compiled

codeTelix

SLD Slide AutoCADSLDPRT Part SolidWorksSLDASM Assembly SolidWorksSLDDRW Drawing SolidWorks

SLI Slide MAGICorp Slide ServiceSLK Microsoft Excel import format Microsoft ExcelSLK SYLK Symbolic Link format data

fileMultiPlan

SLL Sound data fileSLL Static Link Library PowerBASICSLN Microsoft Visual Studio Solution Microsoft Visual StudioSLP SLP command file created by

SRCCOMRT-11

SLP Localization project file SisulizerSLT SALT Script Application Language

for Telix script sourceTelix

SLV Solution for any game manySM Maillist SoftSpoken MailerSM Script ScriptMakerSM SMALLTALK source code fileSM Text file Samna WordSM StepMania Step File StepMania

SMC Super MagiCom SNES ROM image

Super MagiCom

SMCLVL Secret Maryo Chronicles Level Secret Maryo ChroniclesSMF Fax SMARTFAXSMF 3D World Studio mesh filesSMK Smacker Video Format (RAD

Video)SML System Macro Library RT-11

SMM Ami Pro Macro File Ami ProSMN Font (ParaGraph's WorkScript

format)SMP Sample (sound file)SMP Samplevision File Samplevision

SMPL Data Megahedron 3D objectSMS MSTS Sound management system

fileMSTS

SMT Text file Smart Ware IISN Compressed song file Sound Club editor

SND Digitized sound file Macintosh/ATARI/PCSND Power Chords drum sound file Power Chord

SNDB SQLNotes database SQLNotesSNG Song (midi sound) Midisoft Studio - PrismSNG Saved game file for StarCraft StarCraftSNO SNOBOL4 source code fileSNP Book-shelf for .BOO READIBMSNP Microsoft Access report snapshotSNP Output video format from

Computer Eyes equipmentSNX Saved game file for StarCraft:

Brood WarStarCraft: Brood War

SO shared object, dynamically linked library

Unix, Linux

SOAR Soar Production fileSOF Altera FPGA programming file

(internal RAM)Altera Quartus

SOL Solution e.g. game walkthroughsSOL Adobe Flash shared object ("Flash

cookie") (Movie, film, video and multimedia file type)

Adobe Flash

SOM Network serial numbers Quattro ProSOM Sort information ParadoxSON Song SBStudio IISOU Temporary BATCH file RT-11SOU SBStudio II Sound File SBStudio IISOU Sound data (sound tool)SP Archive (unix) SPLINT

SPC Program Microsoft MultiplanSPC Temporary file WordPerfect for WinSPC SNES SPC-700 Sound File SNES gamesSPC Spectroscopic data (scientific) Thermo ScientificSPD Scalable font Speedo - Harvard Graphics 3.0SPF Slide presentation file EnerGraphicsSPF data SQR Portable FormatSPG Glossary SprintSPI Graphics (Siemens and Philips

scanner)SPIFF Still Picture Interchange File

FormatSPIN Spin source file Parallax Propeller MicrocontrollersSPL Archive SPLINTSPL Customized printer driver SprintSPL Divided file segment SliceSPL Personal spell dictionary SignatureSPL Print spooling file Windows 3.xSPL SampleSPM Data wp{wp}.spm WordPerfectSPP Printer file SprintSPR Document letter SprintSPR Generated executable screen file FoxProSPR SpriteSPR Story Board spritesSPS Exported SyncBack profile SyncBackSPS Screen driver SprintSPS SPSSx source code file VAX/VMSSPT Data support file (MITAC

disk/system management utility pack)

MITAC disk/system management utility pack

SPT SPITBOL source code fileSPW Worksheet SigmaPlotSPX Compiled executable screen file FoxProSPX Ogg Speex bitstream[1] Xiph.Org FoundationSQD Squish message base SquishSQI Squish message base index SquishSQL SQL language code Any SQL databaseSQL Squish message base lastread

pointersSquish

SQM Windows Live Messenger log fileSQN Note file SquareNoteSQZ Archive SQUEEZESQZ FOXPRO Squeeze file FOXPROSRC Source code Aurora CompilerSRC Multi- source Multi-SRC Source DataFlexSRF Sun Raster File graphics fileSRP Script QuickLinkSRT Subtitle format SubRipSS Bitmap graphics SplashSS Screen saver DN

SSC Celestia Solar System Catalog file CelestiaSSD Datafile SAS/PCSSF Graphic file SnagIt Studio File/PCSSG Saved game Simsig

SSIF Stereoscopic Interleaved file Media playback devices / software that supports Blu-ray 3D

SSP Datafile SAS TransportSSR FLEXIT Singleshot Survey Raw

Data fileFLEXIT

SST AVHRR graphic fileSSV Spreadsheet viewer fileST Instrument library Scream TrackerST SMALLTALK source code file Little SmalltalkST Stamp NeoPaint

STA Data file StatisticaSTA Saved state Reflection 4.0STA Stack Spinmaker PlusSTB Symbol table file RT-11STB Stub library Genus GX KernelSTC Celestia Star Catalog file CelestiaSTC OpenOffice.org XML spreadsheet

templateOpenOffice.org Calc

STD State Transition Diagram graphic file

Prosa

STD OpenOffice.org XML drawing template

OpenOffice.org Draw

STEAMSTART

STEAMSTART file Steam (software)

STF Archive SHRINKTOFITSTF Setup Table FileSTI OpenOffice.org XML presentation

templateOpenOffice.org Impress

STK eBook StarebookSTL Stereolithography Interface FormatSTL Subtitle files EBU-standardSTM Music format (4 channels) (Scream

Tracker Module)ST - DMP

STM State Transition Diagram model file

Prosa

STO Pascal stub OBJ file Genus GX KernelSTP Subtitler Project Belle Nuit SubtitlerSTR Gate3 table structure fileSTR Structure list object file dBASE Application GeneratorSTR PlayStation video fileSTS Music format (Scream Tracker

Song)ST 2.0-2.3

STS Project status info Microsoft C/C++STU Studio Project Pinnacle Studio (video software)

STUFF EVE Online compressed file archive

CCP hf

STW Data file SmartTerm for Windows

STW OpenOffice.org XML text document template

OpenOffice.org Writer

STX Electronic book SmarTextSTX Music formatSTX Tax form CA-Simply TaxSTY Ami Pro Template (Style); used by

other programs for `styles`Ami Pro

STY Style library or sheet manySU? Packed mail FTN softwareSUB Subtitle format SubViewer; Author David DolinskiSUF Sony camera configuration file

(setup.suf)XDCAM-EX camcorders

SUI SUIT library Simple User Interface ToolkitSUM SummarySUN Sun rasterfile graphics file Sun MicrosystemsSUO Solution User Options Microsoft Visual StudioSUP Subtitle file (Blu-ray encapsulated

container)SupRip

SUP Supplementary dictionary WordPerfect for WinSUR Surface topography (in native

"SURF" format)MountainsMap

SV6 Saved Game File RollerCoaster Tycoon 2SVC Represents the ServiceHost

instance hosted by Internet Information Services

Windows Communication Foundation

SVD Autosave file for document Microsoft WordSVG Autosave file for glossary Microsoft WordSVG Scalable Vector Graphics manySVQ MRC-Pro sequencers music format Roland Corporation synths such as

XP or Fantom seriesSVS Autosave file for style sheet Microsoft WordSVW Super Video Windows Conversion ArtistSVX Interchange, 8SVX/16SV AWAVESVY FLEXIT Survey data FLEXITSW Raw Signed Word (16bit) data AWAVE

SWF Shockwave Flash MacromediaSWG SWIG source code SWIGSWG SWAG Pascal Snippets file SWAGSWP Document backup SprintSWP Swap fileSWT Hump Routes File FYMSXC OpenOffice.org XML spreadsheet OpenOffice.org CalcSXD OpenOffice.org XML drawing OpenOffice.org DrawSXG OpenOffice.org XML master

documentSXI OpenOffice.org XML presentation OpenOffice.org Impress

SXM OpenOffice.org XML formula OpenOffice.org Calc

SXP 3DS Process file 3D StudioSXW OpenOffice.org XML text

documentOpenOffice.org Writer

SY1 SmartPix symbol library Ami ProSY3 Harvard Graphics formatSY3 Symbol file Harvard Graphics 3.0SYD Backup of startup files created by

QEMM (?) autoexec.sydSYD Sysedit backup file SyseditSYG Monitor and handler files created

by SYSGENRT-11

SYM Compiler symbolic information fileSYM P-CAD component (symbols) P-CADSYM Precompiled headers Borland C++SYM Program symbol table Power C, Microsoft ILink

incremental linkerSYM Symbol file Harvard Graphics 2.0, Microsoft

Windows SDKSYN SDSC Synu image file SDSC Image ToolSYN Synonym file Microsoft Word 5SYS Datafile SYGRAPH - SYSTAT - SPSS/PCSYS System file - device driver or

hardware configuration infoDOS

SYW Graphics file (symbol) Harvard Graphics WinSYW Yamaha SY-85/SY-99 Wave File Convert (c) Villena

SZPROJ SZInstallSystem Project SoftwareZator 2011 Standart Edition

T[]

Ext. Description Used byT Archive without compression

(tape)tar

T TADS sourceT Tester symbol table ReaGeniX code generator

T?H Turbo Help file (Pascal, C, Assembler, ...)

Borland Thelp

T$M AVG scan log files[2] AVGT2B Bookeen Cybook thumbnail Cybook

t2flow Taverna 2 workflow definition

Taverna workbench

T2L True2Life file format 3D Internet content developersT44 Temporary file for Sort or

IndexdBASE IV

T64 Program C64S emulatorTAG Query tag name DataFlexTAH Help file for Turbo Borland C++

AssemblerTAL Adobe Type Align AdobeTAL Text illustration TypeAlignTAP Tape file ZX Spectrum emulator by g.a.lunterTAR Archive TARTAZ Archive WinZipNT - TAR - COMPRESSTB Tab file (Virtual Desktop

Tab)Tabbery

TB1 Font file Borland Turbo CTB2 Font file Borland Turbo CTBF Fax Imavox TurboFaxTBK FOXPRO template backup

fileFOXPRO

TBK Memo backup dBASE IV - FoxProTBK Toolbook Asymetrix ToolBookTBL Short for Table used by many programsTBL Aldus TableEditor file TableEditorTBL Gate3 table fileTBL Graphics file (native format) PageMaker TableEditorTBL Table of values OS/2TBR Norton Desktop custom

toolbarNDW

TBS Text elements ?? (Textbausteine)

Microsoft Word

TBX Table Project Scheduler 4 - TermBase eXchange (ISO 30042)

TBZ Archive WinZipNT - TAR - Bzip2TC Configuration Turbo C - Borland C++

TCH Help file Turbo C - Borland C++TCL Tool Command Language

source codeSwat

TCT Drawing Template TurboCAD for WindowsTCW Native Drawing File TurboCAD for WindowsTD Config from Turbo Debugger Turbo DebuggerTD0 Compressed disk image file TelediskTD1 Multi-part disk image file TelediskTD2 Configuration file Turbo Debugger for Win32TDB Database TACT

TDDD Imagine Object File Format ImagineTDF Speedo font fileTDF Typeface definition file SpeedoTDH Help file for Turbo Debugger Borland C++TDK Keystroke recording file Turbo DebuggerTDR Contens of Arvid tapeTDS Symbol table Turbo DebuggerTDT Thumbnail data AVCHDTDW Configuration file Turbo Debugger for Windows

TEC Data TECPLOT outputTEC TECO macro file ("compiled"

form)TECO

TEF Fax Relisys TEFAXTEL Host file TelnetTEM Input template IconAuthorTEM Turbo Editor Macro

Language scriptBorland C++

TERM Terminal FileTES TECO macro file (source

form)TECO

TET Tetris results DNTEX Datasheet IdealistTEX TeX text file Scientific Word - TeXTEX Image Slimtex

TEXT Text fileTF Configuration Turbo Profiler

TFA Area file Turbo ProfilerTFC Catalogue file Tobi's Floppy CataloguerTFF self executing TansForm

dialogueTansForm

TFH Help file for Turbo Profiler Borland C++TFM Tagged font metric file IntellifontTFM TeX Font Metric file TeXTFS Statistical information Turbo ProfilerTG1 Project file On TargetTGA Targa True Color bitmapped

formatPaint.NET

TGZ Archive WinZipNT - TAR - GNUzipTH? Packed mail FTN softwareTHE Windows'95 Desktop Theme Microsoft PlusTHM Thumbnail or Theme File Picture Publisher, PhotoMagic, Canon Digital

Cameras, and Sony Digital Cameras create these Thumbnail files; also used for Sony Ericsson Theme File, for a cell phone

THP Nintendo proprietary video format

Various Nintendo games

THR ThredWorks Embroidery Format

Thred, Embroidermodder

THS Thesaurus dictionary WordPerfect for WinTIB Acronis True Image Backup Acronis True ImageTIC FTN special file with

assotiated file descriptionALLFIX

TIF see TIFFTIFF TIFF (tagged image format

file) bitmapped fileAlchemy - PhotoStyler -PageMaker - CorelDRAW

TIGER Tomb Raider binaries files Ubi

TIL Fuzzy logic knowledge base Togai InfraLogic Fuzzy-C CompilerTIP Digital Signage Presentation Tru-Designer, Tru-Player, Tru-Scheduler part

of Tru-i Suite[3]

TIS Tile set MahJongg 3.0TJL Backup file VAXTPU editorTLB Reference table Bubble ChamberTLB Text library VAXTLB Type library [1] A binary file with information about a COM

or DCOM object so other applications can use it at runtime. Created by Visual C++ or Visual Studio. Used by many Windows applications.

TLC Compiled Tool Command Language source code

Swat

TLD Disk Image TelediskTLH Typelib Generated C/C++

HeaderVisual C++

TLP Project TimeLineTLX Website builder TrellixTM2 Typical Meteorological Year

data (new)Typical Meteorological Year

TMF Tagged Font Metric file WordPerfect for WinTMF TiVo movie TiVoTMO ZTG global optimizer default

output fileZortech C++

TMO HandsHigh ThoughtManager Outline

ThoughtManager Desktop

TMP Temporary file ALL PROGRAMSTMS TeleMate compiled script TeleMateTMY Typical Meteorological Year

data (old)Typical Meteorological Year

TMY2 Typical Meteorological Year data (new)

Typical Meteorological Year

TOC Table Of Contents text file (ASCII)

TOCG TorgaNET Diplomatic Cables State Department of TorgaTOK Borland C++ 4.x reserved

word listBCW.EXE

TOG TorgaNET TorgaNET database fileTOPC TopicCrunch SEO Project file

holding keywords, domain and search engine settings (ASCII)

TORRENT

TORRENT File BitTorrent clients (various)

TOS Character file The Only SheetTOS Self-extracting file archive

(Atari ST)TP Session-state file Turbo Profiler

TP Turbo Pascal cfg file Turbo PascalTP TinkerPlots Document TinkerPlots and Fathom Dynamic Data

Software; documents contain data tables, graphs, text, pictures, etc.

TP3 Template Harvard Graphics 3.0TPB Downloadable PCL Soft font

file backupHiJaak

TPC File produced when an inter-Topicscape topic link file is exported to Windows

3D Topicscape

TPF Downloadable PCL Soft font file

HiJaak

TPF Print data in EMF format ThinPrintTPH Help file Turbo PascalTPL Resident units library Turbo PascalTPL Template file GoldEd -ITrackTPL Template Harvard Graphics 2.0

TPOLY Data TPOLY 3D objectTPP Protected Mode Units Borland Pascal 7.0TPT Digital Signage Presentation

TemplateTru-Designer, Tru-Scheduler part of Tru-i Suite[3]

TPU Borland Pascal DOS Mode Library

Borland Pascal

TPU Command file (VAXTPU editor)

VAXTPU editor

TPW Borland Pascal Windows Library

Borland Pascal

TPW Session-state file Turbo Profiler for WindowsTPZ Archive TAR - GNUzipTR Man page input suitable for

troff -mancawf2.zip

TR Session-state settings Turbo Debugger for DOSTR2 Session-state settings Turbo Debugger for Win32TRC Debug support file Power CTrace

TRASH File found during a file scan as bugged

Windows

TRE Directory tree file PC-ToolsTRD Datafile TrID file identifier filetypes definitions

packageTRIA Data Greg Hood's ASCII TriangleTRIB Data Greg Hood's Binary TriangleTRIF Tiled Raster Interchange

FormatTRK Track (i.e. video sequence),

used by many gamesTRM Terminal settings Windows 3.xTRN Translation support file Quattro - ClarionTRS Executable file Micrografx or password file

TRS WiSo Mein Geld 2007TRS IBM Mainframe log file TRSMAINTRU True Basic source fileTRW Session-state settings Turbo Debugger for WindowsTRY Typical Meteorological Year

data (variant)TRNSYS

TS MPEG Transport Stream Various media players / softwareTS Qt Linguist TS File Trolltech Qt Linguist

TSE Data Light Map Maker ASCII SceneTSK Microsoft Multimedia Task

ApplicationWin95

TSL Exported Schedule Tru-Scheduler part of Tru-i SuiteTSM Turbo Assembler Manual TASM for OS/2TST Printer test file WordPerfect for WinTSV Tab Separated ValuesTTF TrueType Font fileTU? Packed mail FTN softwareTUD The Ultimate Draw file The Ultimate DrawTUT TutorialTV Table view settings Paradox

TVF Table view settings dBASETVn Overflow file above insert

point in Doc nWordPerfect for Win

TXC Test Configuration FormatTXF Tax eXchange FormatTXI Support file TeXTXT Common name for ASCII

text fileTXT Tab-Delimited Text File Microsoft ExcelTXT Document Extension TextEditTXW Yamaha TX-16W Wave File Convert (c) VillenaTY TiVo movie TiVo

TYM Time Stamp (PageMaker 4) PageMaker 4TZ Archive TAR - COMPRESS

TZB Archive TAR - COMPRESS - BTOATZL Tanzzle pattern file TanzzleTZX Tanzzle image file Tanzzle

U[]

Ext. Description Used byU3D Model file format Ultimate 3DU3D Universal 3D Adobe AcrobatU8 SampleUB Raw Unsigned Byte (8bit) data AWAVE

UC2 Archive UC II

UCN New archive UC IIUCS Unknownsoft Service Pack

(mainly for Shadow OS 2009)Unknownsoft Computer Systems

UDF Filter Aldus PhotostylerUDO Data Moray User Defined Object

UDIWWW bookmark data UdiWWWUDW Raw Unsigned DWord data AWAVEUE2 Encrypted archive UC IIUFI data UFO CaptureV2 settings -UFO graphic file Ulead Photo ImpactUHA UHarc archiveUHS Universal Hint System (binary

file)UI Espire source code file Geoworks UI Compiler Geos[disambiguation needed]

UI Qt Designer's UI File Trolltech Qt DesignerUI User interface Sprint

UIF Long prompts for windows WordPerfect for WinUIH Espire header file Geoworks UI Compiler GeosUL ULAW audio file

ULD Information about uploaded files

Procomm Plus - Datastorm Technologies, Inc.

ULF data MRF Mapping Tool Kit Universal List Format

ULT Music UltraTrackerUMB Backup file MemMakerUMP Umple UML Programming

Language FormatUmple

UNF Universal NES Image Interchange File Format

UNI Datafile Forecast ProUNI Music format UNIMOD - MIKMOD

UNIF Universal NES Image Interchange File Format

UNV Text file containing finite elements nodal coordinates and more See notes

Originally used by SDRC for its I-deas software; a lot of simulation software use it today

UNX Text file containing UNIX specific info

UOML UniqueObject Markup Language (UOML) is a XML-based markup language

UOP Uniform Office Format presentation

UOS Uniform Office Format spreadsheet

UOT Uniform Office Format textUPD Update data dBASEUPO Compiled update data dBASE

URL Internet Shortcut (URL) Windows ExplorerURT Utah Raster ToolkitUSE Log fileUSP Printer font with USASCII

extended character setAdobe PageMaker

USR User database file Procomm Plus - Turbo C++ tourUST UTAU vocal track UTAUUT! datafile uTorrentUTZ Mobile Phone Theme Sony EricssonUU Encoded file (ASCII) UUENCODE/UUDECODE - Uuencoding

UUE Encoded file (ASCII) UUENCODE/UUDECODE - UuencodingUW Raw Unsigned Word 16bit data AWAVE

UWF UltraTracker WaveSample UltraTracker

V[]

Ext. Description Used byV Consistency check support file ReaGeniX code generatorV Main input file for an image Vivid 2.0V Coq source fileV Verilog source file

V1, V2, ...

Split parts of a whole file JJSplit

V8 Covox 8bit file AWAVEV10 Data Gouraud Shaded VectorsV2D Voucher design file Voucher management included in JFire

(e.g. when printing a voucher)VAI multimedia PhotoDub documentVAL Validity checks and referential

integrityParadox for Windows

VAL Values list object file dBASE Application GeneratorVALA Sourcecode ValaVAN Animation VistaProVAP Value Added Process NetWare 2.xxVAP Dialogic indexed adpcm voice file VBASE/40VAR Variable file IconAuthorVB Visual Basic .Net source file Visual Basic .NET

VBPROJ Visual Basic .Net project file Visual Basic .Net Express and Visual Studio 2003-2010 Project

VBR Visual Basic Custom Control file Visual BasicVBS VBScript script file VBScriptVBX Visual Basic eXtension Visual BasicVBZ Visual Basic Setup Wizard Template Setup WizardVC6 Graphite - 2D and 3D drafting Ashlar-VellumVC Include file with color definitions Vivid 2.0VC Spreadsheet VisiCalc

VCA Visual Clip ArtVCD VideoCDVCD VirtualDrive CD Image FileVCD Value Change Dump (Verilog)

temporal database fileVCD VisualCADD Drawing FileVCR VCR drivers for ArvidVCW Visual workbench information Microsoft Visual C++VCX Spreatsheet VisiCalc AdvancedVDA Bitmap graphicsVDI Virtual Disk Image VirtualBoxVDO Story Board video image Story BoardVDR Drawing ComputerEasy DrawVEG Vegas Project Sony VegasVEW GroupWise for Windows WinVEW View file Clipper 5 - Lotus ApproachVF0 Database file OTExpert 5VFA FontLab Database file FontLabVFD Virtual Floppy Disk Windows Virtual PC (among others)VFM Ventura Font Metrics fileVFM Voting Form VoterVFN Voting Form for Customers VoterVGA VGA display driverVGA VGA display fontVGD VGA display driver Generic CADDVGM Video Game Music audio formatVGR Graphics file Ventura PublisherVHD Virtual Hard Disk Windows Virtual PC (among others)

VI LabVIEW Virtual Instrument LabVIEWVI Graphics file Jovian Logic VIVI Watcom editor script VI.EXE

VIA VIA Document Project VIA Text EditorVIC see VICAR

VICAR Graphics (Video Image Communication and Retrieval)

VID Bitmap graphics (YUV12C M-Motion Frame Buffer)

VID Graphics format Word&DeedVID MS-DOS Shell Monitor file MS-DOS 5VID Screen device driver WordVIF see VIFF

VIFF Khoros Visualization Image File Format

SDSC Image Tool

VIK Graphics format (VIKING)VIM Vim script file Vim text editorVINF data ReMPEG log file - frames infoVIR Virus or infected file

VIS VIS graphics fileVLM Vellum, Vellum 2D, Vellum Draft,

Vellum 3D, DrawingBoardAshlar-Vellum

VLM Virtual Loadable Module NetwareVM Virtual Memory file Geoworks

VMC Virtual memory configuration DOS/4GW PM 32X DOS ExtenderVMDK Virtual Disk file VMwareVMF Font characteristics Ventura PublisherVMG Nokia message file format Text Message Editor (Nokia PC Suite)VMS Text file containing VMS specific

infoVO Include file with object definition Vivid 2.0

VOB Video Object DVD-R, DVD-RWVOC Sound format (Creative Lab's Sound

File)PlayVoc

VOF Object folder VZ ProgrammerVOP Visual Orangator ProjectVOP Visual OTTHYMO ProjectVOX Dialogic adpcm file AWAVE, CoolEditVP 3DS Video posting 3D Studio

VPF Vector Product FormatVPG Graphics file VPGraphicsVPH Virtual Pascal Help VP/OS2VPI Virtual Pascal Unit VP/OS2VQA Vector Quantized Animation The Legend of KyrandiaVRM Overlay file QuattroProVRM Visual rexx source WATCOM VREXX

VRML Virtual Reality Modeling Language NetScapeVRP Project WATCOM VX?RexxVRS Video Resource e.g. video device

driverWordPerfect

VS Vellum Solids Ashlar-VellumVS Include file with surface definition Vivid 2.0

VSD Diagram Shapeware VisioVSD Visio drawing VisioVSM Visual Simulation Model VisSimVSP Sprite SPXVSQ Vocal track data Vocaloid2VSS SmartShapes file Shapeware VisioVSS Visio Template VisioVST Truevision Vista graphics fileVST Visio Template Visio

VSTO Microsoft Office add-in file Microsoft Visual StudioVUE Animation 3D StudioVUE View dBASE IV - FoxProVW Text file VolksWriter

VWR File viewer file PC Tools

VWX CAD File VectorWorks 2008VXD Windows 3.x virtual device driver Windows 3.xVZT Temporal database file GTKWave data file

W[]

Ext. Description Used byW Word chart file APPLAUSE

W01 Yamaha SY-series wave files AWAVEW01 Yamaha TX16W wave file AWAVEW30 Printer font AST TurboLaser

- Ventura Publisher

W31 Startup file Windows 3.1W3A Warcraft III Abilities Export File Contained in a

Warcraft III mapW3B Warcraft III Destructables Export File Contained in a

Warcraft III mapW3D Warcraft III Doodads Export File Contained in a

Warcraft III mapW3D Westwood 3D object format 3D models used

in Renegade and Generals

W3D Shockwave 3D object formatW3G Warcraft III Replay File File for Warcraft

IIIW3H Warcraft III Buffs Export File Contained in a

Warcraft III mapW3M Warcraft III Map File for Warcraft

III: Reign of Chaos

W3N Warcraft III Campaign File for Warcraft III: The Frozen Throne

W3O Warcraft III Object Data Export File Contained in a Warcraft III map

W3P Warcraft III Save Save File for Warcraft III

W3Q Warcraft III Upgrades Export File Contained in a Warcraft III map

W3T Warcraft III Item Export File Contained in a Warcraft III map

W3U Warcraft III Unit Export File Contained in a Warcraft III map

W3V Warcraft III Save Save File for Warcraft III

W3X Warcraft III Expansion Map File for Warcraft

III: The Frozen Throne

W3Z Warcraft III Save Save File for Warcraft III

W40 renamed system files (AUTOEXEC.BAT, COMMAND.COM, CONFIG.SYS,DBLSPACE.BIN.DRVSPACE.BIN,MSDOS.SYS) of previous MS-DOS version

Windows 95, 98, ME (dual-boot feature)

W44 Temporary file for Sort or Index dBASEW95 Something for Windows95 Win95WAD Where's All the Data? Doom - Doom2WAD Nintendo proprietary format for Wii channels, menus,

etc.Nintendo Wii

WAG Yard Contents File FYMWAI Warcraft III AI Data File Warcraft III AI

Data FileWAR Java Web Archive A Java file

format used to package and deploy web applications

WAS ProComm Script File (source code) ProCommWAV Sound format (Microsoft Windows RIFF WAVE) Media PlayerWAX TVTonic WAX video packaging Wavexpress

TVTonicWAX ProComm compiled script ProCommWAX Windows Media Audio Shortcut Windows Media

Player (Windows Media Audio Redirector)[4]

WB1 Notebook Quattro ProWB2 Spreadsheet Quattro ProWBF Microsoft Windows Batch File CatchWBK Document/workbook or Microsoft Word backup file WordPerfect for

Win or Microsoft Word

WBT Norton Desktop Norton DesktopWBT Wilsonware Batch file WinbatchWCD Condes Event Data file CondesWCD Macro token list WordPerfect for

WinWCH WordPerfect Macro Facility WPWCM Data transmission file Microsoft WorksWCM Macro WordPerfect for

WinWCP Product information description WordPerfect for

Win

WD InfoSelect Data fileWDB Database Microsoft WorksWDM Admin tool connection definition War FTPWE? Packed mail FTN softwareWEB WEB source code file Web Easy

ProfessionalWebOOGL Web Object Oriented Graphics Library

WFB Turtle Beach WaveFront Bank AWAVEWFD Turtle Beach WaveFront Drum AWAVEWFM Form object dBASE Form

DesignerWFN Font CorelDRAWWFP Turtle Beach WaveFront Prog. AWAVEWFT Web Family Tree GRAMPSWFX Data file WinfaxWG1 Worksheet Lotus 1-2-3/GWG2 Worksheet Lotus 1-2-3 for

OS/2WID Width table Ventura

PublisherWIFI Torga OS Wifi Settings Database 14th Information

Division (Torga)WIM Windows Imaging Format ImageXWIN Window file FoxPro - dBASE

WIREFRAME

Data EMSE mesh

WIX Windows Installer XML WiXWIZ Page wizard Microsoft

PublisherWK1 Spreadsheet Lotus 1-2-3

version 2.x - Lotus Symphony 1.1+

WK3 Spreadsheet Lotus 1-2-3 version 3.x

WK4 Spreadsheet Lotus 1-2-3 version 3.4

WKB Document WordPerfect for Win

WKE Spreadsheet Lotus 1-2-3 educational version

WKF VISI Working file Vero SoftwareWKI Spreadsheet format Lotus 123 2xWKQ Spreadsheet QuattroWKS Spreadsheet Lotus 1-2-3

version 1A - Lotus Symphony

1.0, Microsoft Works

WKS Workspace XlispWKZ Spreadsheet format Dos NavigatorWLK Graphics Virtus

WalkthroughWLK Walk Through for any game manyWMA Windows Media Audio audio fileWMC Backup of startup files by Windows MathCad

autoexec.wmcMathCad

WMC Macro file WordPerfect for Win

WMC Text file WordMARCWMDB Windows Media Player database Windows Media

PlayerWMF Windows MetaFile vector graphicsWMO WoW Map Object Blizzard

Entertainment games (World of Warcraft/Warcraft series)

WMP Graphics (Windows Magic Icon Palette)WMV Windows Media Video video fileWN Text NeXT WriteNow

WNF Corel Draw Font File CorelDrawWOA Swap file Windows 3.xWOC Organization Windows

OrgChartWOW Music (8 channels) Grave Mod

PlayerWP Word Perfect Format WPWP5 Document WordPerfect 5.xWPD Document WordPerfect 6.0

- PFS:WindowWorks

WPD Windows printer driver (uninstallable) WindowsWPF Fax WorldPortWPF Form WordPerfectWPG WordPerfect Graphics vector graphics DrawPerfectWPJ Watcom C/C++ IDE project IDE.EXEWPK Macros WordPerfect for

WinWPL MediaRack Wave Playlist MediaRackWPL Windows Media Playlist, for Windows Media PlayerWPM Macros WordPerfectWPS Text document Microsoft WorksWQ! Compressed spreadsheet Quattro Pro

WQ1 Spreadsheet Quattro ProWR1 Spreatsheet Lotus Symphony

1.1 - 1.2 - 2WRD Template CharismaWRI Write editor format Write -

WinWordWRK Spreadsheet Lotus Symphony

1.0WRL VRML fileWRP Archive Amiga WARPWRS Windows Resource e.g. might indicate error if word

cannot openWordPerfect for Win

WS APL WorksheetWS Text file WordStar 5.0-6.0WS2 Text file WordStar 2000WSD Document WordStarWSP Workspace Fortran

PowerStationWSQ Wavelet-packet Scalar Quantization Format

WSRC X-wais sourceWST Text file WordStarWTR Working Timetable rules file SimsigWTT Working Timetable timings file SimsigWTF World of Warcraft Data File World of

WarcraftWTF WinTaper DataWWB Button bar for document window WordPerfect for

WinWWF WWF Document FormatWWK Keyboard layout WordPerfect for

WinWXH Program/Script File WaxHtml Web

Programming Language

WXP Document EXP for Windows

WZ Wizet game archive file Wizet/Nexon MapleStory

WZA Encrypted archive file Department of Defense Encryption Wizard (Public Edition)

X[]

Ext. Description Used by

X Archive X1.EXEX AVS X image file SDSC Image ToolX DirectX 3D objectX LEX source code fileX XBasic Source code file Xbasic

X3D x3d and xdart FormatsXA XA audio file used in SimCity 3000 by Maxis, also by

Sony PlayStationXAR Xara graphics file Files created by Xara Photo & Graphic

Designer (formerly Xara Xtreme and Xara Studio); early versions used the extension ART

XBE Xbox Executable XboxXBM X11 Bitmap graphics fileXLBL extensible Business Reporting

LanguageBusiness Reporting

XCF Gimp image file The GimpXCK Extended crack file (usually text)XCL Xtree for Windows Script file Xtree for WinXDF OS/2 extended disk format image XDFCOPY.EXEXDM Directory Manipulator for 32-bit

Protected ModeXenotech Research Labs

XE Xenon - for Associative 3D Modeling Ashlar-VellumXEX Xbox 360 Executable FileXFN Printer font Xerox 4045 - Ventura PublisherXFR Ventura Publisher Bitmap Editor

Font fileXFT 24 pin printer font ChiWriterXI Fast Tracker 2 instrument file AWAVEXI Fastracker 2.0 Instrument File Fastracker 2.0

XIF Xerox Image Format Pagis Pro 2.0 and 3.0XLA Add-in macro sheet Microsoft ExcelXLA XLib Archive xlibpas2.zipXLB Microsoft Excel Toolbar Microsoft ExcelXLC Microsoft Excel Chart Microsoft ExcelXLD Microsoft Excel Dialog Microsoft ExcelXLF Extensible LADAR Format LadarSIMXLK Microsoft Excel Archive Microsoft ExcelXLL Microsoft Excel Dynamic Link

LibraryMicrosoft Excel

XLM Microsoft Excel Macro File Microsoft ExcelXLS Microsoft Excel Spreadsheet Microsoft Excel

XLSB Microsoft Excel 2007 Binary Workbook (BIFF12)(Spreadsheets)

Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)

XLSM Microsoft Excel 2007 Macro-Enabled Workbook (Spreadsheets)

Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)

XLSX Office Open XML Workbook Microsoft Excel 2007 (see Microsoft

(Spreadsheets) Office 2007 file extensions)XLT Microsoft Excel Template Microsoft ExcelXLT Translation table Lotus 1-2-3 - Symphony - Procomm PlusXLV Microsoft Excel Module Microsoft ExcelXLW Microsoft Excel Workbook Microsoft ExcelXM Fast Tracker 2 extended module AWAVE, Mod4Win, FastTracker,

ImpulseTrackerXM Music format FastTracker - Cubic Player

XMC Assisted contact lists file format, based on xml and used in kindergartens and schools

Classmates iPhone app

XMOD

Monarch Model Monarch Professional

XMI Compressed eXtended MIdi musicXML eXtensible Markup Language fileXMF eXtensible Music Format

XMPZ XML Miradi Project Zipfile MiradiXMV Video XboxXNF Standard Network File formXnn Secondary indexes Borland ParadoxXOF RenderMorphicsXP eXtended Pattern FastTracker 2.0

XPL X-Plane system file Laminar researchXPM X11 Pixel Map graphics fileXPO Microsoft Dynamics AX Export fileXPS Open XML Paper Specification /

OpenXPSopen standard document format initially created by Microsoft and similar in concept to Adobe PDF files

XQT Executable file WaffleXQT Macro sheet SuperCalcXRF Cross-reference fileXSF Data Microsoft InfoPath file

XSPF XML Sharable Playlist FormatXTB External translation table LocoScriptXTP XTreeGold overlay XTreeGoldXVF Xyngo Video File Xyngo Video BoardXWD X Window System window dump

image graphics fileSDSC Image Tool

XWK Keyboard mapping CrosstalkXWP Session CrosstalkXWP Text file Xerox WriterXX Encoded file (ASCII) XXENCODE

XXE Encoded file (ASCII) XXENCODEXXX Singer Embroidery Format EmbroidermodderXY Text file XY WriteXY3 Text file XYWrite IIIXYW Text file XyWrite III

XYZ Molecular coordinates XMol, RasMol

Y[]

Ext. Description Used byY Archive (Amiga) YabbaY YACC grammar file Yacc/Bison

YAL Data custom/nature.yal Arts & LettersYC Archive YACC (YAC.EXE)

YLIB Yookoo Music Library Backup File Yookoo Media PlayerYnn Secondary index Borland ParadoxYMP Yast Meta Package YAST2 (SUSE Linux Package Manager)

YOOKOO

Yookoo Playlist Yookoo Media Player

YST Data YASRT Raytracer sceneYRD Yard Tracks File FYMYUV Graphics format (YUV)YY Bison grammar file BisonYZ Archive YAC

Z[]

Ext. Description Used byZ Archive WinZipNT - COMPRESS - PACK

Z01-Z99 Split WinRAR ArchiveZ2S Zoo Tycoon 2 saved game Any game in the Zoo Tycoon 2 seriesZ3 Infocom game module

Z3D Zmodeler-file Zmodeler 1 & 2Z64 Nintendo 64 ROM Project64 Nintendo 64 emulatorZ80 Snapshot ZX Spectrum emulator by g.a.lunterZAD ZFax digitized voice file ZFaxZDG Compressed ZiffNet text document ZviewZED BitTorrent Link PodmailingZER Data fileZIP Archive PKZip - WinZip - Mac OS X

ZOO Zoo Tycoon saved game Any game in the Zoo Tycoon (first) seriesZYP Reason Subtractor Patch File Propellerhead ReasonZZT ZZT World Any world created using the ZZT editor