FILE EXTENSION A-Z
A
.a – library (unix)
.ad – screen saver data (AfterDark)
.adi – graphics (AutoCAD)
.adl – MCA adapter description library (QEMM)
.afi – Truevision bitmap graphics
.afm – Type 1 font metric ASCII data for font installer (ATM – many)
.all – format file for working pages (Always)
.all – general printer information (WordPerfect for Win)
.ani – animation (Presidio – many)
.anm – animation (Deluxe Paint Animator)
.ans – ANSI graphics (character animation)
.ans – ASCII text ANSI character set (NewWave Write)
.asc – ASCII text file
.avi – Audio Video Interleaved animation file (Video for Windows)
B
.bak – backup file
.bas – BASIC source code file
.bat – batch file (DOS)
.bbm – brush (Deluxe Paint)
.bbs – Bulletin Board System announce or text info file
.bch – batch process object file (dBASE Application Generator)
.bcp – Borland C++ makefile
.bdf – Bitmap Distribution Format font file (X11)
.bga – bitmap graphics
.bib – bibliography (ASCII)
.bib – database – not compatible with TeX format (Papyrus)
.bib – literature database (TeX/BibTeX)
.bif – Binary Image Format b&w graphics (Image Capture board)
.bin – binary file
.bio – OS2 BIOS
.bit – bitmap X11
.bm – BitMap graphics
.bmk – Help Bookmarks (Windows 3.x)
.bmp – BitMaP graphics (PC Paintbrush – many)
.bpt – bitmap fills file (CorelDRAW)
.btm – Batch To Memory batch file (4DOS)
.bup – backup file
C
.c – C source code file
.c – compressed unix file archive created by COMPACT
.c++ – C++ source code file
.cal – calendar file (Windows 3.x)
.cal – spreatsheet (SuperCalc)
.cbl – COBOL source code file
.cbm – compiled bitmap graphics (XLib)
.cbt – Computer Based Training (many)
.cc – C++ source code file
.ceg – bitmap graphics (Tempra Show – Edsun Continuous Edge Graphics)
.cga – CGA display font (Ventura Publisher)
.chk – recovered data (DOS CHKDSK)
.chk – temporary file (WordPerfect for Win)
.clp – clip art graphics (Quattro Pro)
.clp – clipboard file (Windows 3.x)
.cls – C++ class definition file
.cmd – batch file (OS/2)
.cmd – command (dBASE – Waffle)
.cmd – external command menu (1st Reader)
.cpp – C++ source code file
.cpp – presentation (CA-Cricket Presents)
.cpt – compressed Mac file archive created by COMPACT PRO (ext-pc.zip)
.cur – cursor image file (Windows 3.x)
D
.dat – data file in special format or ASCII
.dbd – debug info (Clarion Modula-2)
.dbg – symbolic debugging information (MS C/C++)
.dcf – disk image file
.dd – compressed Macintosh file archive created by DISKDOUBLER
.deb – DEBUG script (DOS Debug)
.def – defaults – definitions
.dem – demonstration
.dem – graphics (VistaPro)
.dgs – diagnostics
.dic – dictionary
.dir – directory file (VAX)
.diz – description file (Description In Zip)
.dlg – dialog resource script file (MS Windows SDK)
.dll – Dynamic Link Library (Windows 3.x – OS/2)
.dll – export/import filter (CorelDRAW)
.dmp – dump file (eg. screen or memory)
.doc – document text file
.dos – network driver (eg. pkt_dis.dos)
.dos – text file containing DOS specific info
.drv – device driver eg. for printer
.dsk – project desktop file (Borland C++ – Turbo Pascal)
.dss – screensaver file (DCC)
E
.ega – EGA display font (Ventura Publisher)
.emu – terminal emulation data (BITCOM)
.env – Enveloper macro (WOPR)
.env – environment file (WordPerfect for Win)
.err – error log
.err – error messages for command line compilers
.esh – Extended Shell batch file
.exc – REXX source code file (VM/CMS)
.exc – exclude file for Optimize (do not process) ( QEMM)
.exe – directly executable program (DOS)
.exm – MSDOS executable, system-manager compliant (HP calculator)
.ext – extension file (Norton Commander)
F
.fac – FACE graphics
.faq – Frequently Asked Questions text file
.fax – fax (raster graphics) (most Fax programs)
.fdw – form (F3 Design and Mapping)
.fix – patch file
.frm – form (Visual Basic)
.ftp – configuration (FTP Software PC/TCP)
.fx – on-line guide (FastLynx)
.fxd – phonebook (FAXit)
G
.gbl – global definitions (VAXTPU editor)
.gfb – compressed GIF image created by GIFBLAST (gifblast.exe)
.gft – font (NeoPaint)
.gif – Graphics Interchange Format bitmap graphics (CompuShow)
.gly – glossary (MS Word)
.gph – graph (Lotus 1-2-3/G)
.gr2 – screen driver (Windows 3.x)
.grb – MS-DOS Shell Monitor file (MS-DOS 5)
.grp – group file (Windows 3.x – Papyrus)
H
.hlp – help information
.hof – Hall Of Fame (game scores)
.hp8 – ASCII text HP Roman8 character set (NewWave Write)
.htm – HTML document (Mosaic)
.htx – Hypertext file
I
.iax – bitmap graphics (IBM Image Access eXecutive)
.ibm – compressed file archive created by ARCHDOS (Internal IBM only)
.icn – ICON source code file
.ico – icon (Windows 3.x)
.id – disk identification file
.ifs – system file (OS/2) hpfs.ifs
.img – bitmap graphics (Ventura Publisher – GEM Paint)
.inc – include file (several programming languages)
.inf – information text file (ASCII)
.inf – install script
.ini – initialization file
.ins – (WordPerfect) wp51.ins
.ins – installation script (1st Reader)
J
.jas – graphics
.jbd – datafile (SigmaScan)
.jpc – graphics (Japan PIC)
.jpg – JPEG Joint Photography Experts Group format bitmap graphics
.jtf – graphics (TIFF file with JPEG compression)
K
.key – security file eg. Shareware Registration info
.kps – IBM KIPS bitmap graphics
.kyb – keyboard mapping (FTP Software PC/TCP)
L
.lbm – bitmap graphics (DeluxePaint)
.lbm – linear bitmap graphics (XLib)
.lcl – (FTP Software PC/TCP)
.ldb – (MS Access)
.lgo – startup logo code (Windows 3.x)
.lib – library file (several programming languages)
.lis – listing (VAX)
.log – log file
.lpc – printer driver (TEKO)
M
.m3d – 3D animation macro
.mac – bitmap graphics (Macintosh MacPaint)
.mac – macro
.mai – mail (VAX)
.mak – makefile
.mak – project file (Visual Basic)
.man – command manual
.map – color palette
.map – format data (Micrografx Picture Publisher)
.map – linker map file
.map – map (Atlas MapMaker)
.map – network map (AccView)
.mbx – mailbox data (ZERBERUS)
.mci – MCI command script (Media Control Interface)
.mcp – printer driver (Mathcad)
.mcw – text file (MacWrite II)
.mdm – modem definition (TELIX)
.meu – menu group (DOS Shell)
.mid – standard MIDI file (music synthetizers)
.mke – makefile (MS Windows SDK)
.mod – MODULA-2 source code file (Clarion Modula-2)
.mod – Windows kernel module
.mon – monitor description (ReadMail)
.mov – movie (AutoCAD AutoFlix)
.mp2 – MPEG audio file (xing)
.mpc – calender file (MS Project)
.mpg – MPEG animation
.msg – message
.msp – bitmap graphics (Microsoft Paint)
.mst – setup script (MS Windows SDK)
.mth – math file (Derive)
.mtm – MultiTracker Module music
.mtw – datafile (Minitab)
.mu – menu (Quattro Pro)
.mus – sound file (MusicTime)
.mvf – stop frame file (AutoCAD AutoFlix)
.mvi – movie command file (AutoCAD AutoFlix)
.mvw – log file (Saber LAN)
.mxt – (MS C)
N
.nws – info text file (latest news) (ASCII)
.nxt – sound (NeXT format)
O
.obj – object code (Intel Recolatable Object Module)
.ocx – OLE custom control
.off – Object File Format vector graphics
.old – backup file
.ovl – overlay file (part of program to be loaded when needed)
.ovr – overlay file (part of program to be loaded when needed)
P
.pac – STAD Image (graphics ?)
.pac – package (SBStudio II)
.pal – color palette
.par – permanent output file (Windows 3.x)
.pcc – cutout picture vector graphics (PC Paintbrush)
.pch – patch file
.pct – bitmap graphics (Macintosh b&w PICT1 – color PICT2)
.pcw – text file (PC Write)
.pcx – bitmap graphics (PC Paintbrush)
.pda – bitmap graphics
.pdv – printer driver (Paintbrush)
.pgm – Portable Grayscale bitMap graphics
.pgm – program (Signature)
.pgp – support file (Pretty Good Privacy RSA System)
.pgs – manual page (man4dos)
.pic – PIXAR picture file (SDSC Image Tool)
.pic – bitmap graphics (Macintosh b&w PICT1 – color PICT2)
.pic – bitmap graphics (many eg. Lotus 1-2-3 – PC Paint)
.pif – Program Information File (Windows 3.x)
.pif – vector graphics GDF format (IBM mainframe computers)
.pit – compressed Mac file archive created by PACKIT (unpackit.zoo)
.pll – pre-linked library (Clipper 5)
.pnt – Macintosh painting
.pop – messages index (PopMail)
.pop – pop-up menu object (dBASE Application Generator)
.prd – printer driver (many)
.pub – public key ring file (Pretty Good Privacy RSA System)
Q
.qpr – print queue device driver (OS/2)
.qpx – compiled query program (FoxPro)
.qrt – QRT ray tracing graphics
.qry – query (dBASE IV)
.qt – QuickTime movie (animation)
.qwk – QWK reader message file
.qxd – document (QuarkXPress)
.qxl – element library (QuarkXPress)
R
.rdi – device-independent bitmap file (RIFF RDIB format)
.rdx – datafile (Reflex)
. rec – datafile (EpiInfo)
.rec – record file (Sprint)
.rec – recorded macro file (Windows 3.x)
.red – path info (Clarion Modula-2)
.ref – cross-reference
.reg – OLE Registration (Windows 3.x)
.reg – registration (Corel programs)
.rem – remarks
.rgb – SGI RGB image file (SDSC Image Tool)
.rif – RIFF bitmap graphics (Fractal Design Painter)
.rip – graphics (Remote Access)
.rix – bitmap graphics (ColorRIX VGA Paint)
.rmk – makefile (RMAKE)
.rpt – report
.rtf – Windows Help file script
.rtl – text file
S
.sav – backup file (saved file)
.sav – configuration
.sav – saved game situation (eg. NetHack)
.sbd – storyboard (Storyboard Editor)
.sbi – Sound Blaster Instrument file (Creative Labs)
.sbr – support file (Source Browser)
.scc – text file
.scr – DEBUG source code file (DOS Debug)
.scr – screen saver (Windows 3.x)
.scx – bitmap graphics (ColorRIX)
.sea – Self-Extracting compressed Macintosh file Archive
.sec – secret key ring file (Pretty Good Privacy RSA System)
.sec – secured animation file (Disney Animation Studio)
.set – setup options file
.sgi – graphics (IRIS – Silicon Graphics)
.sig – current program settings (Signature)
.sig – signature file (PopMail)
.sit – compressed Macintosh archive created by STUFFIT (unsit30.zip)
.smp – sample (sound file)
.smt – text file (Smart Ware II)
.snd – digitized sound file (Macintosh/ATARI/PC)
.spl – sample
.sum – Summary
.swp – swap file (DOS)
.sys – datafile (SYGRAPH – SYSTAT – SPSS/PC)
.sys – system file – device driver or hardware configuration info (DOS)
T
.tbl – graphics (native format) (PageMaker TableEditor)
.tbl – table of values (OS/2)
.tel – host file (Telnet)
.tga – TrueVision Targa bitmap graphics
.tmp – temporary file
.toc – Table Of Contents
.tre – directory tree file (PC-Tools)
.trm – terminal settings (Windows 3.x)
.tut – tutorial
U
.ub – audio file (unsigned byte)
.uhs – Universal Hint System (binary file)
.uif – long prompts for windows (WordPerfect for Win)
.unx – text file containing UNIX specific info
.upd – program update info
.usr – user database file (Procomm Plus – Turbo C++ tour)
V
.vbx – Visual Basic eXtension (Visual Basic)
.vga – VGA display driver
.vga – VGA display font
.vgd – VGA display driver (Generic CADD)
.vid – MS-DOS Shell Monitor file (MS-DOS 5)
.vid – bitmap graphics (YUV12C M-Motion Frame Buffer)
.vid – screen device driver (Word)
.voc – digitized samples (Creative Voice file)
.vst – Truevision Vista bitmap graphics
.vue – animation (3D Studio)
.vxd – Windows 3.x virtual device driver (QEMM)
W
.w31 – startup file (Windows 3.1)
.wav – Waveform audio file (RIFF WAVE format)
.wbf – MS Windows Batch File (Catch)
.wbt – batch file (WinBatch)
.web – WEB source code file
.woa – swap file (Windows 3.x)
.wrs – Windows Resource eg. printer driver (WordPerfect for Win)
X
.xbm – X11 Bitmap graphics
.xll – Excel Dynamic Link Library (MS Excel)
.xmi – compressed eXtended MIdi music
.xwd – X Window System window dump image graphics (SDSC Image Tool)
.xx – compressed file ASCII archive created by XXENCODE (uuexe515.exe)
.xxe – compressed file ASCII archive created by XXENCODE (uuexe515.exe)
Z
.zip – compressed file archive created by PKZIP (pkz204g.exe)
.zoo – compressed file archive created by ZOO (zoo210.exe)
A
.a – library (unix)
.ad – screen saver data (AfterDark)
.adi – graphics (AutoCAD)
.adl – MCA adapter description library (QEMM)
.afi – Truevision bitmap graphics
.afm – Type 1 font metric ASCII data for font installer (ATM – many)
.all – format file for working pages (Always)
.all – general printer information (WordPerfect for Win)
.ani – animation (Presidio – many)
.anm – animation (Deluxe Paint Animator)
.ans – ANSI graphics (character animation)
.ans – ASCII text ANSI character set (NewWave Write)
.asc – ASCII text file
.avi – Audio Video Interleaved animation file (Video for Windows)
B
.bak – backup file
.bas – BASIC source code file
.bat – batch file (DOS)
.bbm – brush (Deluxe Paint)
.bbs – Bulletin Board System announce or text info file
.bch – batch process object file (dBASE Application Generator)
.bcp – Borland C++ makefile
.bdf – Bitmap Distribution Format font file (X11)
.bga – bitmap graphics
.bib – bibliography (ASCII)
.bib – database – not compatible with TeX format (Papyrus)
.bib – literature database (TeX/BibTeX)
.bif – Binary Image Format b&w graphics (Image Capture board)
.bin – binary file
.bio – OS2 BIOS
.bit – bitmap X11
.bm – BitMap graphics
.bmk – Help Bookmarks (Windows 3.x)
.bmp – BitMaP graphics (PC Paintbrush – many)
.bpt – bitmap fills file (CorelDRAW)
.btm – Batch To Memory batch file (4DOS)
.bup – backup file
C
.c – C source code file
.c – compressed unix file archive created by COMPACT
.c++ – C++ source code file
.cal – calendar file (Windows 3.x)
.cal – spreatsheet (SuperCalc)
.cbl – COBOL source code file
.cbm – compiled bitmap graphics (XLib)
.cbt – Computer Based Training (many)
.cc – C++ source code file
.ceg – bitmap graphics (Tempra Show – Edsun Continuous Edge Graphics)
.cga – CGA display font (Ventura Publisher)
.chk – recovered data (DOS CHKDSK)
.chk – temporary file (WordPerfect for Win)
.clp – clip art graphics (Quattro Pro)
.clp – clipboard file (Windows 3.x)
.cls – C++ class definition file
.cmd – batch file (OS/2)
.cmd – command (dBASE – Waffle)
.cmd – external command menu (1st Reader)
.cpp – C++ source code file
.cpp – presentation (CA-Cricket Presents)
.cpt – compressed Mac file archive created by COMPACT PRO (ext-pc.zip)
.cur – cursor image file (Windows 3.x)
D
.dat – data file in special format or ASCII
.dbd – debug info (Clarion Modula-2)
.dbg – symbolic debugging information (MS C/C++)
.dcf – disk image file
.dd – compressed Macintosh file archive created by DISKDOUBLER
.deb – DEBUG script (DOS Debug)
.def – defaults – definitions
.dem – demonstration
.dem – graphics (VistaPro)
.dgs – diagnostics
.dic – dictionary
.dir – directory file (VAX)
.diz – description file (Description In Zip)
.dlg – dialog resource script file (MS Windows SDK)
.dll – Dynamic Link Library (Windows 3.x – OS/2)
.dll – export/import filter (CorelDRAW)
.dmp – dump file (eg. screen or memory)
.doc – document text file
.dos – network driver (eg. pkt_dis.dos)
.dos – text file containing DOS specific info
.drv – device driver eg. for printer
.dsk – project desktop file (Borland C++ – Turbo Pascal)
.dss – screensaver file (DCC)
E
.ega – EGA display font (Ventura Publisher)
.emu – terminal emulation data (BITCOM)
.env – Enveloper macro (WOPR)
.env – environment file (WordPerfect for Win)
.err – error log
.err – error messages for command line compilers
.esh – Extended Shell batch file
.exc – REXX source code file (VM/CMS)
.exc – exclude file for Optimize (do not process) ( QEMM)
.exe – directly executable program (DOS)
.exm – MSDOS executable, system-manager compliant (HP calculator)
.ext – extension file (Norton Commander)
F
.fac – FACE graphics
.faq – Frequently Asked Questions text file
.fax – fax (raster graphics) (most Fax programs)
.fdw – form (F3 Design and Mapping)
.fix – patch file
.frm – form (Visual Basic)
.ftp – configuration (FTP Software PC/TCP)
.fx – on-line guide (FastLynx)
.fxd – phonebook (FAXit)
G
.gbl – global definitions (VAXTPU editor)
.gfb – compressed GIF image created by GIFBLAST (gifblast.exe)
.gft – font (NeoPaint)
.gif – Graphics Interchange Format bitmap graphics (CompuShow)
.gly – glossary (MS Word)
.gph – graph (Lotus 1-2-3/G)
.gr2 – screen driver (Windows 3.x)
.grb – MS-DOS Shell Monitor file (MS-DOS 5)
.grp – group file (Windows 3.x – Papyrus)
H
.hlp – help information
.hof – Hall Of Fame (game scores)
.hp8 – ASCII text HP Roman8 character set (NewWave Write)
.htm – HTML document (Mosaic)
.htx – Hypertext file
I
.iax – bitmap graphics (IBM Image Access eXecutive)
.ibm – compressed file archive created by ARCHDOS (Internal IBM only)
.icn – ICON source code file
.ico – icon (Windows 3.x)
.id – disk identification file
.ifs – system file (OS/2) hpfs.ifs
.img – bitmap graphics (Ventura Publisher – GEM Paint)
.inc – include file (several programming languages)
.inf – information text file (ASCII)
.inf – install script
.ini – initialization file
.ins – (WordPerfect) wp51.ins
.ins – installation script (1st Reader)
J
.jas – graphics
.jbd – datafile (SigmaScan)
.jpc – graphics (Japan PIC)
.jpg – JPEG Joint Photography Experts Group format bitmap graphics
.jtf – graphics (TIFF file with JPEG compression)
K
.key – security file eg. Shareware Registration info
.kps – IBM KIPS bitmap graphics
.kyb – keyboard mapping (FTP Software PC/TCP)
L
.lbm – bitmap graphics (DeluxePaint)
.lbm – linear bitmap graphics (XLib)
.lcl – (FTP Software PC/TCP)
.ldb – (MS Access)
.lgo – startup logo code (Windows 3.x)
.lib – library file (several programming languages)
.lis – listing (VAX)
.log – log file
.lpc – printer driver (TEKO)
M
.m3d – 3D animation macro
.mac – bitmap graphics (Macintosh MacPaint)
.mac – macro
.mai – mail (VAX)
.mak – makefile
.mak – project file (Visual Basic)
.man – command manual
.map – color palette
.map – format data (Micrografx Picture Publisher)
.map – linker map file
.map – map (Atlas MapMaker)
.map – network map (AccView)
.mbx – mailbox data (ZERBERUS)
.mci – MCI command script (Media Control Interface)
.mcp – printer driver (Mathcad)
.mcw – text file (MacWrite II)
.mdm – modem definition (TELIX)
.meu – menu group (DOS Shell)
.mid – standard MIDI file (music synthetizers)
.mke – makefile (MS Windows SDK)
.mod – MODULA-2 source code file (Clarion Modula-2)
.mod – Windows kernel module
.mon – monitor description (ReadMail)
.mov – movie (AutoCAD AutoFlix)
.mp2 – MPEG audio file (xing)
.mpc – calender file (MS Project)
.mpg – MPEG animation
.msg – message
.msp – bitmap graphics (Microsoft Paint)
.mst – setup script (MS Windows SDK)
.mth – math file (Derive)
.mtm – MultiTracker Module music
.mtw – datafile (Minitab)
.mu – menu (Quattro Pro)
.mus – sound file (MusicTime)
.mvf – stop frame file (AutoCAD AutoFlix)
.mvi – movie command file (AutoCAD AutoFlix)
.mvw – log file (Saber LAN)
.mxt – (MS C)
N
.nws – info text file (latest news) (ASCII)
.nxt – sound (NeXT format)
O
.obj – object code (Intel Recolatable Object Module)
.ocx – OLE custom control
.off – Object File Format vector graphics
.old – backup file
.ovl – overlay file (part of program to be loaded when needed)
.ovr – overlay file (part of program to be loaded when needed)
P
.pac – STAD Image (graphics ?)
.pac – package (SBStudio II)
.pal – color palette
.par – permanent output file (Windows 3.x)
.pcc – cutout picture vector graphics (PC Paintbrush)
.pch – patch file
.pct – bitmap graphics (Macintosh b&w PICT1 – color PICT2)
.pcw – text file (PC Write)
.pcx – bitmap graphics (PC Paintbrush)
.pda – bitmap graphics
.pdv – printer driver (Paintbrush)
.pgm – Portable Grayscale bitMap graphics
.pgm – program (Signature)
.pgp – support file (Pretty Good Privacy RSA System)
.pgs – manual page (man4dos)
.pic – PIXAR picture file (SDSC Image Tool)
.pic – bitmap graphics (Macintosh b&w PICT1 – color PICT2)
.pic – bitmap graphics (many eg. Lotus 1-2-3 – PC Paint)
.pif – Program Information File (Windows 3.x)
.pif – vector graphics GDF format (IBM mainframe computers)
.pit – compressed Mac file archive created by PACKIT (unpackit.zoo)
.pll – pre-linked library (Clipper 5)
.pnt – Macintosh painting
.pop – messages index (PopMail)
.pop – pop-up menu object (dBASE Application Generator)
.prd – printer driver (many)
.pub – public key ring file (Pretty Good Privacy RSA System)
Q
.qpr – print queue device driver (OS/2)
.qpx – compiled query program (FoxPro)
.qrt – QRT ray tracing graphics
.qry – query (dBASE IV)
.qt – QuickTime movie (animation)
.qwk – QWK reader message file
.qxd – document (QuarkXPress)
.qxl – element library (QuarkXPress)
R
.rdi – device-independent bitmap file (RIFF RDIB format)
.rdx – datafile (Reflex)
. rec – datafile (EpiInfo)
.rec – record file (Sprint)
.rec – recorded macro file (Windows 3.x)
.red – path info (Clarion Modula-2)
.ref – cross-reference
.reg – OLE Registration (Windows 3.x)
.reg – registration (Corel programs)
.rem – remarks
.rgb – SGI RGB image file (SDSC Image Tool)
.rif – RIFF bitmap graphics (Fractal Design Painter)
.rip – graphics (Remote Access)
.rix – bitmap graphics (ColorRIX VGA Paint)
.rmk – makefile (RMAKE)
.rpt – report
.rtf – Windows Help file script
.rtl – text file
S
.sav – backup file (saved file)
.sav – configuration
.sav – saved game situation (eg. NetHack)
.sbd – storyboard (Storyboard Editor)
.sbi – Sound Blaster Instrument file (Creative Labs)
.sbr – support file (Source Browser)
.scc – text file
.scr – DEBUG source code file (DOS Debug)
.scr – screen saver (Windows 3.x)
.scx – bitmap graphics (ColorRIX)
.sea – Self-Extracting compressed Macintosh file Archive
.sec – secret key ring file (Pretty Good Privacy RSA System)
.sec – secured animation file (Disney Animation Studio)
.set – setup options file
.sgi – graphics (IRIS – Silicon Graphics)
.sig – current program settings (Signature)
.sig – signature file (PopMail)
.sit – compressed Macintosh archive created by STUFFIT (unsit30.zip)
.smp – sample (sound file)
.smt – text file (Smart Ware II)
.snd – digitized sound file (Macintosh/ATARI/PC)
.spl – sample
.sum – Summary
.swp – swap file (DOS)
.sys – datafile (SYGRAPH – SYSTAT – SPSS/PC)
.sys – system file – device driver or hardware configuration info (DOS)
T
.tbl – graphics (native format) (PageMaker TableEditor)
.tbl – table of values (OS/2)
.tel – host file (Telnet)
.tga – TrueVision Targa bitmap graphics
.tmp – temporary file
.toc – Table Of Contents
.tre – directory tree file (PC-Tools)
.trm – terminal settings (Windows 3.x)
.tut – tutorial
U
.ub – audio file (unsigned byte)
.uhs – Universal Hint System (binary file)
.uif – long prompts for windows (WordPerfect for Win)
.unx – text file containing UNIX specific info
.upd – program update info
.usr – user database file (Procomm Plus – Turbo C++ tour)
V
.vbx – Visual Basic eXtension (Visual Basic)
.vga – VGA display driver
.vga – VGA display font
.vgd – VGA display driver (Generic CADD)
.vid – MS-DOS Shell Monitor file (MS-DOS 5)
.vid – bitmap graphics (YUV12C M-Motion Frame Buffer)
.vid – screen device driver (Word)
.voc – digitized samples (Creative Voice file)
.vst – Truevision Vista bitmap graphics
.vue – animation (3D Studio)
.vxd – Windows 3.x virtual device driver (QEMM)
W
.w31 – startup file (Windows 3.1)
.wav – Waveform audio file (RIFF WAVE format)
.wbf – MS Windows Batch File (Catch)
.wbt – batch file (WinBatch)
.web – WEB source code file
.woa – swap file (Windows 3.x)
.wrs – Windows Resource eg. printer driver (WordPerfect for Win)
X
.xbm – X11 Bitmap graphics
.xll – Excel Dynamic Link Library (MS Excel)
.xmi – compressed eXtended MIdi music
.xwd – X Window System window dump image graphics (SDSC Image Tool)
.xx – compressed file ASCII archive created by XXENCODE (uuexe515.exe)
.xxe – compressed file ASCII archive created by XXENCODE (uuexe515.exe)
Z
.zip – compressed file archive created by PKZIP (pkz204g.exe)
.zoo – compressed file archive created by ZOO (zoo210.exe)
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