Are you looking for extension files name of computer?

Here is the list of computer extension files name.

Most of the computer has two different files name called first name and last (extension) name. A computer extension file is commonly use with three characters and seperated by period (.) from first name. This extension helps computers to identify program and how to properly open the file. This information is about the extension, the name of the program it works with, the specific function of the file, and the company that makes the program. The below table is a listing of the most commonly found extension files name by symbolic, numeric and alphabetic order.

#(Symbolic) | 0(Numeric)  A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

#	Description
.#01	Numbered Picture Files.
.#24	Locoscript 24-pin Printer Data File.
.#GF	MetaFont Font File.
.#IB	Locoscript Dot Matrix Data File (LocoScript Software).
.#SC	Locoscript Dot Matrix Data File (LocoScript Software).
.#ST	Locoscript Dot Matrix Printer Definition File (LocoScript Software).
.###	Temporary file.
.###	DoubleSpace Compressed Volume.
.###	QTIC Temporary File.
.$	BASIC VB VB1D Komp Symbole File.
.$#!	AOL 5.0 Virchk File (AOL).
.$#!	Cryptext.
.$00	DOS Pipe File.
.$01	DOS Pipe File.
.$01	Midi File.
.$02	DOS Pipe File.
.$02	Midi File.
.$03	DOS Pipe File.
.$04	DOS Pipe File.
.$05	DOS Pipe File.
.$1	ZX Spectrum-Emulator.
.$A	AutoCAD Autosave File (Autodesk).
.$C	Graphics Converter Pro.
.$S	Graphics Converter Pro.
.$AC	AutoCAD Autosave File (Autodesk).
.$B5	Apple II ProDOS 16 or GS/OS Shell Application (Apple Computer, Inc.).
.$DB	dBASE Temp File.
.$ED	C Editor Temporary File (Microsoft).
.$ED	C/C++ Temporary Editor File (Microsoft).
.$EU	Midiprg Mustat Compressed File.
.$ID	Cubase Compressed File (Steinberg).
.$LL	Cubase Compressed File (Steinberg).
.$LN	C++ TLink Response File (Borland).
.$NG	Midiprg Mustat Compressed File.
.$OL	DOS Pipe File.
.$ON	Cubase Fonts Compressed File (Steinberg).
.$RI	Cubase Audio Compressed File (Steinberg).
.$RR	Cubase Compressed File (Steinberg).
.$TF	Cubase Fonts Compressed File (Steinberg).
.$VM	Windows 3.x Virtual Manager Temp File (Microsoft).
.$WM	Epson Creative Studio Example File.
.$XE	Mustat Compressed Audio File.
.$$_	Midiprg Capella Compressed File.
.$$A	OS/2 program file.
.$$F	OS/2 database file.
.$$P	OS/2 Notes (IBM).
.$$S	OS/2 spreadsheet file.
.$$$	Backup.
.$$$	Used by OS/2 to keep track of archived files.
.$$$	Temporary file.
.!C	Graphics Converter Pro.
._00	Soundtrack Compressed File.
._01	Soundtrack Compressed File.
._02	Soundtrack Compressed File.
._1	Audio Utility Tuningwrench Compressed File.
._2	Audio Utility Tuningwrench Compressed File.
._3	Audio Utility Tuningwrench Compressed File.
.-5	Audio Utility Tuningwrench Compressed File.
._8	Audio Utility Tuningwrench Compressed File.
._H	Type Manager Japanese Font Outline (Adobe).
._V	Type Manager Japanese Font Metrics (Adobe).
._DB	Stratum Data Icons File.
._DD	Norton Disk Doctor Recovered File.
._DM	Nuts n Bolts disk minder recovery file.
._MP	InstallShield Temporary Installer File (InstallShield Software Corporation).
._RS	RVS-COM Service Pack (Living Byte Software GmbH).
.___FPE	Folder Password Expert Protected Folder (ZQS Software Team).
.___	Adinf table.
.---	File used to backup sys, ini, dat, and other important files from Windows 3.1 and above.
.---	Microsoft Backup File Set (Microsoft).
.---	Windows Temporary File.
.(D)	pcAnywhere Temporary File.
.)2(	LHA Archiver Temporary File.
.{PB	Backup.
.???	ANY Three Character Audio File.
.???	Trend Micro Virus Pattern File (Trend Micro, Inc.).
.??_	InstallShield Compressed File (InstallShield Software Corporation).
.??_	Microsoft KWAJ compressed (Phil Katz's 'deflate').
.??_	Microsoft SZDD compressed (Haruhiko Okumura's LZSS).
.~	Temporary File.
.~AP	C++ AppExpert Project Database File (Borland).
.~BM	Img RC File.
.~CU	Cursor File.
.~DE	C++ Project Backup File (Borland).
.~DF	Delphi DFM File Backup (Borland).
.~DFM	Delphi Backup File (Borland).
.~DP	Delphi DPR File Backup (Borland).
.~DR	ARKEY Drawing Backup.
.~MN	Norton Commander Menu Backup.
.~NT	NT Install Files.
.~NT	XP Install File.
.~PA	Delphi PAS File Backup (Borland).
.~PAS	Delphi Backup (Borland).
.~PR	Terramodel Project Backup.
.~RE	Image File.
.~SG	TapCIS Message Index File.
.~$~	1st Reader Temporary File.
.~_~	Temporary File (Microsoft).
.~01	(~01..~99) Norton Editor Backup File.
.~1~	Illum Source File.
.~T~	RK Archiver Temporary File (RK Software).
.~~A	Ap File.
.~~D	Windows Applog File.
.~~F	Windows Applog File.
.~~M	Windows Applog File.
.~~~	Temporary file.
.@HA	ImsiSoft E-mail Animator.
.@@@	Screen Files.
.&&&	Temporary File.
0	Description
.0	Javasoft JRE 1.3 Library File.
.0	Flight Simulator Texture File (Microsoft).
.0	Inno Setup Binary File.
.0	WebOutfitter Service Verification Utility (Intel).
.0	Hacha Split File.
.01	Fifa 2001 User File.
.0-R	PNG File.
.0-W	PNG File.
.00_	Winfnkt8 File.
.01_	Winfunktion 8 File.
.02_	Winfunktion 8 File.
.03_	Winfunktion 8 File.
.04_	Winfunktion 8 File.
.05_	Winfunktion 8 File.
.06_	Winfunktion 8 File.
.0B	Pagemaker printer font LineDraw enhanced characters.
.000	PaperPort Scanned Image (ScanSoft Inc.)
.000	(000-999) ARJ Multi-volume Compressed Archive.
.000	(000-999) Sequentially Numbered Backup Files.
.000	Doublespace Compressed Data File (Microsoft).
.000	Geoworks Data File.
.000	(000-999)Used to number backup versions of files or used to number related data files for multiple users of a small-scale PC application.
.000	(000-999) Trend Micro Pattern File.
.000	(000, 010, 020, 030, etc.) Advanced Revelation Database File (Revelation Software).
.000	Empower Data File (Metapraxis Ltd.)
.000	IsoBuster CD/DVD Image File (Container) (Smart Projects).
.000	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.001	(001-0??) Fresh Download Split File (Freshdevices Corp.)
.001	(001-999) HJSplit File.
.001	Drivespace Virtual Drive (Microsoft).
.001	Fax Data File.
.001	Hayes JT FAX File.
.001	Sometimes Used as Backup File.
.001	Tagged Image Format File.
.001	000 - Any Number) Totem Cash Ad File.
.001	Genesis 2000 (Genesis 2000, Inc.)
.001	SwiftView ICS Command File (SwiftView, Inc.)
.001	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.001	(001-0??) Cutkiller Start of a Split File Sequence (N2jf Team).
.002	Driveimage5 Setup File.
.002	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.003	Driveimage5 Setup File.
.003	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.004	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.005	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.006	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.007	James Bond 007: NightFire.
.007	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.008	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.009	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.00B	PenSoft Payroll Backup File.
.01$	(01$...Any Number$) Compressed Archive (Microsoft).
.016	Formula 1 Car Race 2001 File.
.01B	PenSoft Payroll Backup File.
.030	Printer Driver File.
.031	International S-57 Hydrographic Data Electronic Navigation Chart (US NOAA / US Army Corps of Engineers).
.033	Printer Driver File.
.036	Printer Driver File.
.042	Printer Driver File.
.044	Printer Driver File.
.049	Printer Driver File.
.075	Ventura Publisher 75dpi Screen Characters.
.085	Ventura Publisher 85dpi Screen Characters.
.090	Printer Driver File.
.091	Ventura Publisher 91dpi Screen Characters.
.096	Ventura Publisher 96dpi Screen Characters.
.0B	PageMaker Printer Font LineDraw Characters (Adobe).
.0HA	Maestro Mama File.
.075	Ventura Publisher 75x75 dpi screen characters.
.085	Ventura Publisher 85x85 dpi screen characters.
.091	Ventura Publisher 91x91 dpi screen characters.
.096	Ventura Publisher 96x96 dpi screen characters.
.1	Inno Setup Binary File.
.1	Roff/nroff/troff/groff Manual Source (UNIX).
.1	(1..Any Number) Might be Part of a Version Number.
.1	(1, 2, 3, etc.) Multi-part Super Nintendo Game-console ROM Image.
.1	WebOutfitter Service Verification Utility (Intel).
.1	Stuffit Archive File (Aladdin Systems, Inc.)
.1	Pro/ENGINEER Backup File (PTC).
.1-1	Likely a Section of an ASCII File.
.1-C	Graphlib URT File.
.1-P	PNG File.
.1ST	File used by some software manufacturers to represent a file that should be read first before starting the program.
.1-STEP	1-Step Backup (Iomega).
.10	IBM Voice Type Language Script Data File.
.10	Salt Lake City Game Music file.
.100	Designer Graphics File.
.101	OmniPage OCR File (ScanSoft, Inc.)
.102	OmniPage OCR File (ScanSoft, Inc.)
.103	OmniPage OCR File (ScanSoft, Inc.)
.104	OmniPage OCR File (ScanSoft, Inc.)
.108	OmniPage OCR File (ScanSoft, Inc.)
.10O	Embroidery File.
.10X	Gemini Bitmap Printer Graphics File.
.11	IBM Voice Type Language Script Data File.
.11	Salt Lake City Game Music file.
.110	OmniPage OCR File (ScanSoft, Inc.)
.111	Winfunktion 8 Grafik Julia1 File.
.112	Winfunktion 8 Grafik Julia1 File.
.113	Iomega Backup File (Iomega).
.118	Winfunktion 8 Grafik Julia1 File.
.12	IBM Voice Type Language Script Data File.
.12	Salt Lake City Game Music File.
.1212	Crypto Shell Extensions Certificate Revocation List.
.123	1-2-3 Spreadsheet (Lotus).
.128	OmniPage OCR File (ScanSoft, Inc.)
.129	Winfunktion 8 Grafik Julia1 File.
.12M	Lotus 1-2-3 Smartmaster File.
.12U	PageMaker Font (Adobe).
.13	IBM Voice Type Language Script Data File.
.13	Salt Lake City Game Music file.
.130	Winfunktion 8 Grafik Julia1 File.
.133	Winfunktion 8 Grafik Julia1 File.
.137	Winfunktion 8 Grafik Julia1 File.
.139	Winfunktion 8 Grafik Julia1 File.
.14	IBM Voice Type Language Script Data File.
.14	Salt Lake City Game Music File.
.143	Winfunktion 8 Grafik Julia1 File.
.145	Winfunktion 8 Grafik Julia1 File.
.149	Winfunktion 8 Grafik Julia1 File.
.15	IBM Voice Type Language Script Data File.
.15	Salt Lake City Game Music File.
.151	Winfunktion 8 Grafik Julia1 File.
.153	Winfunktion 8 Grafik Julia1 File.
.159	Winfunktion 8 Grafik Julia1 File.
.15U	PageMaker Printer Font (Adobe).
.16	IBM Voice Type Language Script Data File.
.16	Salt Lake City Game Music File.
.160	OmniPage OCR File (ScanSoft, Inc.)
.163	Winfunktion 8 Grafik Julia1 File.
.167	Winfunktion 8 Grafik Julia1 File.
.169	Winfunktion 8 Grafik Julia1 File.
.16_	Ntgraph Setup File.
.17	IBM Voice Type Language Script Data File.
.175	Winfunktion 8 Grafik Julia1 File.
.18	IBM Voice Type Language Script Data File.
.18	Salt Lake City Game Music File.
.183	Winfunktion 8 Grafik Julia1 File.
.187	Winfunktion 8 Grafik Julia1 File.
.19	IBM Voice Type Language Script Data File.
.19	Salt Lake City Game Music file.
.191	Winfunktion 8 Grafik Julia1 File.
.196	Computer Snooper Log File.
.1AU	Wave AFSP Man Audio File.
.1DK	OS/2 SAVEDSKF Format File.
.1PE	TurboTax Form File (Intuit).
.1PH	TurboTax (Intuit).
.1PS	Man PS File.
.1q1	(1Q1…9Q9) Squeeze.
.1ST	Information.
.1T	Fortran File.
.1TX	1toX File (Logipole).
.2	IBM Voice Type Language Script Data File.
.2	Salt Lake City Game Music File.
.2	WebOutfitter Service Verification Utility (Intel).
.2	Setup Factory 6.0 Setup Launcher (Microsoft).
.2	UNIX Manual Page.
.20	Salt Lake City Game Music File.
.200	ebase 2.0.
.201	Starmoney Agent Rollback File.
.207	Winfunktion 8 Grafik Julia1 File.
.21	Salt Lake City Game Music File.
.210	Starmoney Bpd Hbcioffl 280 File.
.22	Clipstream 20 Kb Stream.
.22	Salt Lake City Game Music File.
.229	Winfunktion 8 Grafik Julia1 File.
.232	Office Install (Microsoft).
.24	Salt Lake City Game Music File.
.24B	Bitmap Graphic.
.25	Salt Lake City Game Music File.
.256	Formula 1 Car Race 2001 File.
.261	H.261 Encoded Video File.
.263	H.263 Encoded Video File.
.28	Salt Lake City Game Music file.
.281	ASM Md86.
.286	Windows 3.x Virtual Device Driver (Standard Mode).
.2A	Dictionary File.
.2BP	Pocket PC Bitmap.
.2D	Amapi.
.2D	VersaCAD 2D Drawing File.
.2DA	Infinity Game Engine AD&D Rule Set.
.2DC	Cadwork 2D Catalog.
.2DK	OS/2 SAVEDSKF Format File.
.2DR	Cadwork Road.
.2DS	Unreal Tournament 2D Shape File (Epic Games).
.2GR	3GR VGA Graphics driver/configuration files under Windows.
.2GR	Windows EGA/VGA Screen Grabber.
.2GR	File used in Windows 3.x to display the graphics on older 286 and 386 computers.
.2MG	XGS Apple IIGS Emulator 2IMG Disk Image Format.
.2SP	HomePortal Firmware Recovery File (2Wire, Inc.)
.3	IBM Voice Type Language Script Data File.
.3	Salt Lake City Game Music File.
.3	Solaris Device Configuration Assistant Boot Diskette.
.301	Brooktrout Fax-Mail File.
.301	Super FAX 2000 or Fax-Mail 96 Fax.
.303	Seq-303 Settings.
.32	Salt Lake City Game Music File.
.320	Chromeleon Demo Data File.
.320	Screamtracker 32 File.
.323	H.323 Internet Telephony.
.32S	Win 32s File.
.32X	Gens 2.0 File.
.32_	Ntgraph Setup File.
.34	Salt Lake City Game Music File.
.340	Chromeleon Demo Data File.
.36	Salt Lake City Game Music File.
.360	Backup File.
.37	Salt Lake City Game Music File.
.370	Printer Driver File.
.386	Windows Enhanced Mode Driver or Swap File (Microsoft).
.386	Virtual machine support files for the 386 enhanced mode.
.38_	Compressed Tvideo Card NEU File.
.3A3	STABCAL (stability calculation for aqueous systems) File.
.3A5	STABCAL (stability calculation for aqueous systems) File.
.3B3	STABCAL (stability calculation for aqueous systems) File.
.3B5	STABCAL (stability calculation for aqueous systems) File.
.3C3	STABCAL (stability calculation for aqueous systems) File.
.3C5	STABCAL (stability calculation for aqueous systems) File.
.3CN	3D Movie Maker Scene (Microsoft).
.3D	Advent 3B2 Document.
.3D	Al-Arabi Publisher Document.
.3D	Atari Stereo CAD-3D Objects Graphics Format.
.3D	VersaCAD 3D Drawing File.
.3D	Geocadabra.
.3D	i3D Browser File (Center for Advanced Studies, Research and Development in Sardinia).
.3D2	3DPlus2 Graphic (Serif).
.3D2	Stereo CAD-3D Ver. 2.0 Objects Graphics Format (Atari).
.3D3	Grafik Anim File.
.3D4	Atari Stereo CAD-3D Objects Graphics Format.
.3DA	Atmosphere World File (AtmosphereWorlds).
.3DB	3D Mark Database.
.3DC	3DCC Color Scheme.
.3DD	Grafik Anim File.
.3DF	Quickdraw 3D File.
.3DK	OS/2 SAVEDSKF Format File.
.3DM	Rhino 3D Model File (Robert McNeel & Associates).
.3DM	Quickdraw 3D Metafile (Apple Computer, Inc.)
.3DM	In3D (Flatland 3DML) Three Dimensional Markup Language.
.3DMF	>QuickDraw 3D Metafile (Apple Computer, Inc.)
.3DML	Rover 3D Modeling.
.3DML	In3D (Flatland 3DML) Three Dimensional Markup Language.
.3DO	Tank3 Demo File.
.3DO	Total Annihilation Object File (Cavedog Entertainment).
.3DP	3D Plus (Serif).
.3DP	3DMark03 Pro Benchmark File (Futuremark Corporation).
.3DR	3DMark Benchmark File (Futuremark Corporation).
.3DS	3D Studio 3D Scene (Mesh File) (Autodesk).
.3DV	Grafic 3DV File.
.3DV	Visual Component File.
.3DW	Cadai 3D World Description (Cadai).
.3DX	Rhino 3D Model File (Robert McNeel & Associates).
.3DZ	Easy 3D Creator Project File.
.3F	Advent 3B2 Template.
.3F	Al-Arabi Publisher Template.
.3FX	Corel Chart 3D Effect.
.3G2	3GPP2 Multimedia File.
.3GP	Nokia 7650 Video Recorder Video File (Nokia).
.3GP	3GPP Multimedia File.
.3GP2	3GPP2 Multimedia File.
.3GPP	3GPP Multimedia File.
.3GR	Device Driver.
.3GR	Windows SVGA/XVGA Screen Grabber.
.3GR	File used in Windows 3.x to display the graphics on later 386, 486 and Pentium computers.
.3H	Advent 3B2 Tag Header.
.3H	Al-Arabi Publisher Tag Header.
.3IN	MSN Setup Information.
.3K	Advent 3B2 Keyboard Definition.
.3K	Al-Arabi Publisher Keyboard Definition.
.3M	Advent 3B2 Macro.
.3M	Al-Arabi Publisher Macro.
.3MM	3D Movie Maker Movie (Microsoft).
.3O	Advent 3B2 Object Graphic.
.3O3	STABCAL (stability calculation for aqueous systems) File.
.3O5	STABCAL (stability calculation for aqueous systems) File.
.3P	Advent 3B2 Document Preferences.
.3PI	3rd PlanIt.
.3PS	Man Ps file.
.3R	Advent 3B2 Raster Image.
.3R	Al-Arabi Publisher Raster Image.
.3RF	Advent 3B2 Extensions Script Cross Reference.
.3S	Advent 3B2 Paragraph Styles.
.3T	Advent 3B2 Text.
.3T	Often a manual file.
.3T4	Binary to ASCII Conversion.
.3TA	Triple-T Animation.
.3TF	Crystal Reports (Crystal Decisions).
.3TH	3D Movie Maker Actor (Microsoft).
.3TP	Triple-T Plug-in.
.3X	Advent 3B2 Entity.
.3X5	3x5 Knowledge Base (Vega-Tek).
.3XE	3DLinX Entity.
.3~6	Windows 3.x System File.
.4	IBM Voice Type Language Script Data File.
.4	Salt Lake City Game Music File.
.40	AOL 4.0 Organizer (AOL).
.400	Designer Graphics File.
.404	FruityLoops Channel State File.
.411	Sony Mavica Data File.
.42	Salt Lake City Game Music File.
.44	Clipstream 32 Kb Stream.
.45	Salt Lake City Game Music File.
.49	Salt Lake City Game Music File.
.4A3	STABCAL (stability calculation for aqueous systems) File.
.4A5	STABCAL (stability calculation for aqueous systems) File.
.4B3	STABCAL (stability calculation for aqueous systems) File.
.4B5	STABCAL (stability calculation for aqueous systems) File.
.4BIT	GoDot.
.4BT	GoDot Graphic.
.4C$	4Cast/2 Data.
.4C3	STABCAL (stability calculation for aqueous systems) File.
.4C5	STABCAL (stability calculation for aqueous systems) File.
.4CX	4th Dimension Carbonized Plug-in (4D, Inc.)
.4DB	4D Database Structure.
.4DC	4th Dimension Compiled Structure (4D, Inc.)
.4DD	4D Database Data.
.4DF	4D Database Windows Search Document.
.4DK	OS/2 SAVEDSKF Format File.
.4DL	4D Database Windows Log File.
.4DR	4D Database Data.
.4DS	4D Database Windows Data Segment.
.4DX	4D Database Plug-in.
.4FI	4D Database Windows ASCII Map.
.4FR	4D Database Windows Apply Formula Document.
.4GE	Informix 4GL Compiled Code.
.4GL	Informix 4GL Source.
.4H3	STABCAL (stability calculation for aqueous systems) File.
.4LB	4D Database Windows Label.
.4LK	4D Database Windows Hot Link File.
.4MD	Music File.
.4O3	STABCAL (stability calculation for aqueous systems) File.
.4O5	STABCAL (stability calculation for aqueous systems) File.
.4PP	PhotoParade Ver 4+ Slideshow (Callisto Corporation).
.4QR	4D Database Windows Quick Report.
.4ST	4D Database Windows Saved Set.
.4SW	4DOS Swap File.
.4TH	FORTH Source Code Program.
.4UG	4D Database Windows User/Groups Set.
.4V	Quartet Music File.
.4VR	4D Database Windows Saved Variable.
.4XM	4X Movie Format.
.5	IBM Voice Type Language Script Data File.
.5	Salt Lake City Game Music File.
.510	Cthugha 51 File.
.51Z	CropWalker.
.521	Murray State University Trojan Ring Configuration File.
.545	aiMutation AOL Instant Messenger Skin.
.586	Asm586.
.5D	Works File (Microsoft).
.5DK	OS/2 SAVEDSKF Format File.
.5OO	DOS7 File.
.5PS	Manual PS File.
.6	IBM Voice Type Language Script Data File.
.6	Salt Lake City Game Music File.
.602	T602 Text File.
.60D	Vista Columbus Digital CCTV System Recording.
.60H	Vista Columbus Digital CCTV System Recording.
.64B	C64 PC64 Emulator File.
.64C	C64 PC64 Emulator File.
.64D	C64 PC64 Emulator File.
.64K	C64 PC64 Emulator File.
.668	Music File.
.669	669 Tracker Module.
.669	Unis Composer Music File.
.68	PC Curses 14 File.
.682	Trend Pc-cillin 2000 File.
.686	Asm686.
.699	Portable 699 Loader v0.2.
.6AM	Haltech ECU Fuel and Ignition Map.
.6CM	Sound; 669 Composer.
.6CM	Triton FastTracker 6-Channel Music.
.6DK	OS/2 SAVEDSKF Format File.
.7	IBM Voice Type Language Script Data File.
.7	Salt Lake City Game Music File.
.710	Korg Triton Music Workstation.
.712	HTMST712 File.
.73D	TI-73 Debugger File (Texas Instruments, Inc.)
.73G	TI-73 Group (Texas Instruments, Inc.)
.73I	TI-73 Bitmap (Texas Instruments, Inc.)
.73P	TI-73 Calculator Program (Texas Instruments, Inc.)
.75	Ventura Publisher 75x75 dpi Display Font.
.777	777 Compressed File Archive.
.7DK	OS/2 SAVEDSKF Format File.
.7PS	Manual PS File.
.7Z	7-Zip Compressed File.
.8	A86 Assembler Source Code.
.82B	TI-82 Backup (Texas Instruments, Inc.)
.82G	TI-82 Group (Texas Instruments, Inc.)
.82I	TI-82 Bitmap (Texas Instruments, Inc.)
.82P	TI-82 Calculator Program (Texas Instruments, Inc.)
.83D	TI-83 Debugger File (Texas Instruments, Inc.)
.83G	TI-83 Group (Texas Instruments, Inc.)
.83I	TI-83 Bitmap (Texas Instruments, Inc.)
.83P	TI-83 Calculator Program (Texas Instruments, Inc.)
.83SD	TI-83 Plus Silver Edition Debugger File (Texas Instruments, Inc.)
.85	Ventura Publisher 85x85 dpi Display Font.
.850	Visual Foxpro 98 File.
.852	Visual Foxpro 98 File.
.854	8514 Resolution BMP Bitmap.
.85G	TI-85 Group (Texas Instruments, Inc.)
.85I	TI Bitmap.
.85I	TI-85 Bitmap (Texas Instruments, Inc.)
.85P	TI-85 Calculator Program (Texas Instruments, Inc.)
.866	Visual Foxpro 98 File.
.86G	TI-86 Group (Texas Instruments, Inc.)
.86I	TI-86 Bitmap (Texas Instruments, Inc.)
.86P	TI-86 Calculator File.
.86P	TI-86 Calculator Program (Texas Instruments, Inc.)
.890	SAM Digital Subtitle (Cavena Image Products AB).
.89I	TI-89 Bitmap (Texas Instruments, Inc.)
.89P	TI-89 Calculator Program (Texas Instruments, Inc.)
.89Y	TI-89 Program/Graphic (Texas Instruments, Inc.)
.89Z	TI-89 Program/Graphic (Texas Instruments, Inc.)
.8BA	PhotoDeluxe (Adobe).
.8BC	Photoshop Plug-in (Adobe).
.8BE	PhotoDeluxe Plug-in (Adobe).
.8BF	Filter Factory File.
.8BF	PhotoDeluxe (Adobe).
.8BF	Creative Pack/Designer Sextet/Webmaster Series/Tesselation Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software).
.8BI	PhotoDeluxe Plug-in (Adobe).
.8BI8	Photoshop Plug-in (Adobe).
.8BL	Photoshop Plug-in (Adobe).
.8BP	Photoshop Import (Adobe).
.8BPS	Photoshop (Adobe).
.8BS	Photoshop Plug-in (Adobe).
.8BX	PhotoDeluxe Plug-in (Adobe).
.8BY	PhotoDeluxe Plug-in (Adobe).
.8CM	Triton FastTracker 8-Channel Music.
.8DK	OS/2 SAVEDSKF Format File.
.8LI	Photoshop Plug-in (Adobe).
.8LY	Photoshop Plug-in (Adobe).
.8M	PageMaker Math 8 Printer Font (Adobe).
.8MED	Amiga OctaMed Music (Amiga).
.8SVX	Amiga 8-bit Sound (Amiga).
.8U	PageMaker Roman 8 Printer Font (Adobe).
.8XE	TI-83 Plus Calculator Program (Texas Instruments, Inc.)
.8XI	TI-83 Plus Bitmap (Texas Instruments, Inc.)
.8XK	MirageOS Flash Application for TI-83 Plus.
.8XP	TI-83 Plus Calculator Program (Texas Instruments, Inc.)
.8XP	TI-83 Plus Calculator Program (Texas Instruments, Inc.)
.8XU	TI-83 Plus Calculator Program (Texas Instruments, Inc.)
.9	IBM Voice Type Language Script Data File.
.9	Salt Lake City Game Music File.
.906	Calcomp Plotter File.
.91	Ventura Publisher 91x91 dpi Display Font.
.911	Config 911s File.
.915	Config 915e File.
.917	Trend Antivirus File.
.92G	TI-92 Group (Texas Instruments, Inc).
.92I	TI-92 Bitmap (Texas Instruments, Inc).
.92P	TI-92 Calculator Program (Texas Instruments, Inc).
.92T	TI-92 Text (Texas Instruments, Inc).
.96	Ventura Publisher 96x96 dpi Display Font.
.98	DLL Directx Migrate File.
.999	Multipass Security File.
.99_	Casino Game File.
.9B	Wavetool File.
.9BT	Wavetool File.
.9DK	OS/2 SAVEDSKF Format File.
.9KP	Doom Archived TGA Graphics (id Software).
.9XG	TI-92 Plus Group (Texas Instruments, Inc).
.9XI	TI-92 Plus Bitmap (Texas Instruments, Inc).
.9XK	TI-92 Plus Circuit Analysis (Texas Instruments, Inc).
.9XP	TI-92 Plus Calculator Program (Texas Instruments, Inc).
.9XY	TI-92 Plus Archived Calculator Program (Texas Instruments, Inc).
.9XZ	TI-92 Plus Calculator Program (Texas Instruments, Inc).
A	Description
.A	ADA program file or UNIX library
.A3W	MacroMedia Authorware 3.5 file
.ABK	Autobackup file used with Corel Draw 6 and above.
.ABR	Brush file for Adobe Photoshop
.ACE	WinAce compressed file.
.ACT	Adobe Photoshop Color table file.
.AD	After Dark file.
.ADF	Adapter description files.
.ADM	After Dark screen saver module.
.ADR	After Dark randomizer or Opera browser bookmark backup.
.AI	Adobe Illustrator file.
.AIF	Auto Interchange File Format (AIFF) Audio file.
.ANI	Windows 95/Windows 98/Windows NT animated mouse cursor file.
.ANS	ANSI text file.
.ARJ	Compressed file can be used with Winzip /Pkzip.
.ASC	ASCII Text file.
.ASF	Sort for Advanced Streaming Format, file developed by Microsoft. The .ASF file is generally a movie player and can be open with software such as Windows Media Player.
.ASP	Microsoft FrontPage Active Server Pages. To open these files use your internet browser.
.ATO	Compaq Just Burn File.
.AVI	Microsoft Windows Movie file.
B	Description
.BAK	Backup file used for important windows files usually used with the System.ini and the Win.ini.
.BAS	QBasic program and or Visual Basic Module.
.BAT	Batch file that can perform tasks for you in dos, like a macro.
.BFC	Microsoft Windows 95/Windows 98 Briefcase file.
.BG	Backgammon game file.
.BIN	Translation tables for code pages other than the standard 437.
.BK2	Corel Word Perfect for Windows Backup file.
.BK3	Corel Word Perfect for Windows Backup file.
.BK4	Corel Word Perfect for Windows Backup file.
.BK5	Corel Word Perfect for Windows Backup file.
.BK6	Corel Word Perfect for Windows Backup file.
.BK7	Corel Word Perfect for Windows Backup file.
.BK8	Corel Word Perfect for Windows Backup file.
.BK9	Corel Word Perfect for Windows Backup file.
.BMP	Graphical Bit Mapped File used in Windows Paintbrush.
.BNK	Sim City Backup.
.BPS	Microsoft Works Word Processor File.
.BPT	Corel Draw Bitmap master file.
.BV1	Corel Word Perfect for Windows Backup file.
.BV2	Corel Word Perfect for Windows Backup file.
.BV3	Corel Word Perfect for Windows Backup file.
.BV4	Corel Word Perfect for Windows Backup file.
.BV5	Corel Word Perfect for Windows Backup file.
.BV6	Corel Word Perfect for Windows Backup file.
.BV7	Corel Word Perfect for Windows Backup file.
.BV8	Corel Word Perfect for Windows Backup file.
.BV9	Corel Word Perfect for Windows Backup file.
.BWP	BatteryWatch pro file.
.BZ2	Compressed bzip2 and bunzip compressed file.
C	Description
.C	C file used with the C programming language.
.CAB	Cabinet file used in Windows 95 and Windows 98 that contains all the windows files and drivers. Information about how to extract a .CAB file can be found on document CH000363.
.CAL	Windows Calendar, Supercalculator4 file or Supercal spreadsheet.
.CBL	COBOL Program File.
.CBT	Computer Based Training files.
.CDA	CD Audio Player Track.
.CDR	Corel Draw Vector file.
.CFB	Comptons Multimedia file.
.CFG	Configuration file.
.CFL	Corel flowchart file.
.CFM	Corel FontMaster file / Cold Fusion Template file / Visual dBASE windows customer form.
.CHK	Scandisk file which is used to back up information that scandisk has found to be bad, found in C root. Because the information within these files are corrupted or reported as bad by Scandisk it is perfectly fine to delete these files, providing you are currently not missing any information. Additional information about scandisk can be found on our scandisk page.
.CL	Generic LISP source code.
.CL3	Easy CD Creator layout file.
.CL4	Easy CD Creator layout file.
.CLA	Java Class file.
.CLG	Disk catalog database.
.CLK	Corel R.A.V.E. animation file.
.CLL	Crick software clicker file.
.CLO	Cloe image.
.CLP	Windows Clipboard / Quattro Pro clip art / Clipper 5 compiler script.
.CLR	WinEdit Colorization word list / 1st reader binary color screen image / PhotStyler color definition.
.CLS	Visual Basic Class module /  C++ Class definition.
.CMD	Windows Script File also OS/2 command file.
.CMV	Corel Movie file.
.CNT	Help file (.hlp) Contents (and other file contents).
.CPL	Windows 95/Windows 98/Windows NT control panel icons.
.CNE	Configuration file that builds .COM files.
.CNF	Configuration file.
.COB	COBOL source code file.
.COD	FORTRAN Compiler program code.
.COM	File that can be executed.
.CPE	Fax cover page file.
.CPI	Code Page Information or Microsoft Windows applet control panel file.
.CPP	C++ source code file.
.CRD	Windows Card file.
.CSV	Comma-Separated Variable file. Used primary with databases and spreadsheets/Image file used with CopuShow.
.CUR	Windows Mouse Cursor.
.CVS	Canvas drawing file.
.CXX	C++ program file or Zortech C++ file.
D	Description
.DAT	Clarion DOS Database (SoftVelocity).
.DAT	Data file, generally associated or extra data for a program to use.
.DB	Paradox database file/Progress database file.
.DB2	dBase II file.
.DBC	Microsoft Visiual Foxpro database container.
.DBF	dBase II,III,III+,IV / LotusWorks database.
.DBK	dBase databse backup / Orcad schematic capture backup file.
.DBM	Cold Fusion template.
.DBO	dBase IV compiled program file.
.DBQ	Paradox memo.
.DBT	dBase database text file.
.DBV	Flexfile memo field file.
.DBW	DataBoss database file.
.DBX	Database file / DataBeam Image / MS Visual Foxpro Table.
.DEV	Device Driver.
.DIF	Document Interchange Format VisiCalc.
.DLL	Dynamic Link Library Allow executable code modules to be loaded on demand, linked at run time, and unloaded when not needed. Windows uses these files to support foreign languages and international/nonstandard keyboards.
.DMO	Demo file.
.DMP	Dump file.
.DMD	Visual dBASE data module.
.DMF	Delusion/XTracker Digital Music File.
.DMO	Demo file.
.DMP	Dump file.
.DMS	Compressed archive file.
.DOC	Microsoft Word Windows/DOS / LotusWorks word processor Windows/DOS /PF S:First Choice Windows/DOS DOT MS Word Windows/DOS.
.DOS	Text file and DOS Specification Info.
.DOT	Microsoft Word Template (Macro).
.DRV	Device driver files that attach the hardware to Windows. The different drivers are system, keyboard, pointing devices, sound, printer/ plotter, network, communications adapter.
.DRW	Micrografx draw/graph files.
.DT_	Macintosh Data File Fork.
.DTA	Data file.
.DTD	SGML Document definition file.
.DTF	QA database.
.DTM	DigiRekker module.
.DTP	SecurDesk! Desktop / Timeworks Publisher Text Document / Pressworks Template file.
.DUN	Dialup Networking exported file.
.DX	Document Imaging file/Digital data exchange file.
.DXB	Drawing interchange binary file.
.DXF	Autocad drawing interchange format file.
.DXN	Fujitsu dexNet fax document.
.DXR	Macromedia director projected movie file.
.DYN	Lotus 1-2-3 file.
.DWF	Short for Design Web Format, DWF is a Autodesk file used to store formatted text on the Internet.
.DWG	AutoCad Drawing Database.
E	Description
.EEB	Button bar for Equation Editor in Word Perfect for Windows.
.EFT	CHIWRITER high resolution screen characters.
.EGA	EGA screen characters for Ventura Publisher.
.ELG	Event List text file used with Prosa.
.EMS	Enhanced Menu System configuration file for PC Tools.
.EMU	IRMA Workstation for Windows emulation.
.ENC	ADW Knowledge Ware Encyclopedia.
.END	Corel Draw Arrow Definition file.
.ENG	Sprint dictionary file engine.
.ENV	Word Perfect for Windows environment file.
.EPG	Exported PaGe file used with DynaVox.
.EPS	Encapsulated Postscript, with embedded TIFF preview images.
.EQN	Word Perfect for Windows Equation file.
.ERD	Entity Relation Diagram graphic file.
.ERM	Entity Relation Diagram model file.
.ERR	Error log file.
.ESH	Extended Shell Batch file.
.EVT	Event file scheduler file for PC Tools.
.EX3	Device driver for Harvard graphics 3.0
.EXC	QEMM exclude file from optimization file or Rexx program file.
.EXD	Control information cache for Microsoft office document files.
.EXE	Executable file.
.EXT	Extension file for Norton Commander.
F	Description
.FDF	Adobe Acrobat Forms Document.
.FF	AGFA CompuGraphics outline font description.
.FFA	Microsoft Fast Find file.
.FFF	GUS PnP bank / defFax fax document.
.FFL	Microsoft Fast Find file / PrintMaster Gold form file.
.FFO	Microsoft Fast Find file.
.FFT	DCA/FFT final form text.
.FFX	Microsoft Fast Find file.
.FON	Font files to support display and output devices.
.FR3	dBase IV renamed dBase III+ form.
.FRF	FontMonger Font.
.FRG	dBase IV uncompiled report.
.FRK	Compressed zip file used with Apple Macintosh computers.
.FRM	Form file used with various programs/Microsoft Visual Basic Form / FrameMaker document / FrameBuilder file / Oracle executable form / Word Perfect Merge form / DataCAD symbol report file.
.FRO	dBase IV compiled report / FormFlow file.
.FRP	PerForm Pro Plus Form.
.FRS	WordPerfect graphics driver.
.FRT	FoxPro report file.
.FRX	Microsoft Visual basic binary form file / FoxPro report file.
.FRZ	FormFlow file.
G	Description
.GIF	CompuServe Graphics Interchange Format.
.GR2	286 grabbers that specify which font to use with DOS and Windows.
.GR3	386 grabbers that specify which font to use with DOS and Windows.
.GRA	Microsoft Flight simulator graphics file.
.GRB	Microsoft MS-DOS shell monitor.
.GRF	Micrografx draw/graph files.
.GRP	Microsoft Program Group.
.GZ	Compressed Archive file for GZip.
H	Description
.HBK	Mathcad handbook file.
.HDL	Procomm Plus alternate download file listing.
.HDR	Procomm Plus message header.
.HDX	Help index.
.HEX	Hex dump.
.HFI	GEM HP font info.
.HGL	HP graphics language graphic.
.HH	C++ Header.
.HHH	Precompiled Header for Power C.
.HHP	Help data for Procomm Plus.
.HLP	Files that contain the Help feature used in windows, cannot be read from DOS.
.HQX	Apple Macintosh Binhex text conversion file.
.HSQ	Data files associated with the Qaz Trojan.
.HSS	Photoshop Hue/Saturation information.
.HST	History file / Procomm Plus History File / Host file.
.HTA	Hypertext Application (run applications from HTML document).
.HTM	Web page files containing HTML or other information found on the Internet.
.HTML	Web page files containing HTML or other information found on the Internet.
I	Description
.ICA	Citrix file / IOCA graphics file.
.ICB	Targa Bitmap.
.ICC	Kodak printer image.
.ICE	Archive file.
.ICL	Icon library file.
.ICM	Image Color Matching profile file.
.ICN	Microsoft Windows Icon Manager.
.ICO	Microsoft Windows Icondraw / Icon.
.ID	Disk identification file.
.IDB	Microsoft developer intermediate file, used with Microsoft Visual Studio.
.IDD	MIDI instruments definition.
.IDE	Integrated Development Environment configuration file.
.IDF	MIDI instruments drivers file.
.IDQ	Internet data query file.
.IDX	Index file.
.IFF	IFF/LBM (Amiga) used by Computer Eyes frame grabber.
.IMG	GEM/IMG (Digital Research) or Ventura Publisher bitmap graphic.
.INF	Information file that contains customization options.
.INI	Files that initialize Windows and Windows apps.
.IPF	Installer Script File / OS/2 online documentation for Microsoft source files.
.ISO	Compressed file used for an exact duplicate of a CD. .ISO files can be extracted or opened such programs as Win Image that can be found on our shareware download section. Also see our ISO image dictionary definition.
.IWA	IBM Writing Assistant Text file.
J	Description
.JAS	Graphic.
.JPG	Graphic commonly used on the Internet and capable of being opened by most modern image editors.
.JS	JavaScript file.
.JSB	Henter-Joyce Jaws script binary file.
.JSD	eFAX jet suite document.
.JSE	JScript encoded script file.
.JSH	Henter-Joyce Jaws script header file.
.JSL	PaintShop pro file.
.JSM	Henter-Joyce Jaws script message file.
.JSP	Java server page.
.JSS	Henter-Joyce Jaws script source file.
.JT	JT fax file.
.JTF	JPEG tagged Interchange format file.
.JTK	Sun Java toolkit file.
.JTP	JetForm file.
.JW	Justwrite text file.
.JWL	Justwrite text file library.
.JZZ	Jazz spreadsheet.
K	Description
.K	Desktop Color Separation Specification Black Layer.
.K	NRJ Live File.
.K00	Tonline DB File.
.K01	Tonline DB File.
.K01	Clarion DOS Database Key File (SoftVelocity).
.K02	Tonline DB File.
.K02	Clarion DOS Database Key File (SoftVelocity).
.K03	Tonline DB File.
.K03	Clarion DOS Database Key File (SoftVelocity).
.K04	Clarion DOS Database Key File (SoftVelocity).
.K05	Clarion DOS Database Key File (SoftVelocity).
.K06	Clarion DOS Database Key File (SoftVelocity).
.K07	Clarion DOS Database Key File (SoftVelocity).
.K08	Clarion DOS Database Key File (SoftVelocity).
.K09	Clarion DOS Database Key File (SoftVelocity).
.K1S	Wave Glib19 File.
.K2	Kar2ouche Storyboard File.
.K25	Kodak DC25 Digital Camera File.
.K25	Kurzweil 2500 Sample.
.K3D	3DS Macro Language Description.
.K7	DCMO6 Emulator Tape Image.
.KAL	Sfkal Calender Kal_40 File.
.KAP	MapInfo Sea Chart.
.KAR	Karaoke File used with some audio players.
.KAR	FOX+ 2.0.
.KAR	Keep-It Archive (Remember International Associates Ltd).
.KAT	Katorzer Music Composition.
.KAU	KeyAudit Software Audit.
.KB	C++ Keyboard Script (Borland).
.KB	Knowledge Pro Source Code.
.KBD	Keyboard Script File Layout (Microsoft).
.KBF	MyInfo Documnet/Outline (Milenix Software).
.KBI	Keirsey-Bates Temperament Sorter Index.
.KBM	Reflection Keyboard Script File Layout.
.KBM	Scala Keyboard Mapping.
.KBP	Keirsey-Bates Temperament Sorter Profile.
.KBR	Keirsey-Bates Temperament Sorter Data.
.KBR	The Drums Pro file.
.KBS	ACE Studio Model Builder.
.KCF	Kiss Palette File.
.KCH	K-Chess Notation.
.KCL	Kyoto Common LISP Source Code.
.KCP	Keychamp File.
.KDB	kinodb File (datb).
.KDB	KeePass Password Database (Dominik Reichl).
.KDC	Kodak Photo-Enhancer/Photogen File.
.KDELNK	KDE Desktop.
.KDF	Kinkos Photo (Kinko's, Inc.)
.KDF	VisiQuest (Khoros) Standard Data Format (AccuSoft).
.KDH	CAJViewer.
.KDK	Kodak Proprietary Decimated TIFF Format.
.KDO	Kudo Picture Browser.
.KE$	Modem Bitware Fax Disk2 File.
.KED	KEDIT Profile and Macro File.
.KEN	Player CDcheck Compressed File.
.KEP	Turbo Pascal DOS TP19 Compressed Kepler File (Borland).
.KEP	SapShow Training File (SAP).
.KES	Kurzweil 3000 Scan/Read File.
.KEV	JAWS for Windows Preload File (Freedom Scientific).
.KEX	KEDIT Macro File.
.KEXT	Mac OS X Kernel Extension (Apple).
.KEY	OS/2 Archive .KEY-file.
.KEY	ArcView Geocoding Matching Keys (ESRI).
.KEY	DataCAD Icon Toolbar File (DATACAD LLC).
.KEY	Diablo II Key File (Blizzard Entertainment).
.KEY	Forecast Pro Datafile.
.KEY	FractInt Demo Script.
.KEY	Infinity Game Engine Directory of Resources, Locations and Types.
.KEY	Keyboard Definition File.
.KEY	National Construction Estimator 32 Costbook Key File.
.KEY	Program Security or Registration File.
.KEY	Sentry 2020 Encryption File.
.KEY	TBAV File.
.KEY	Top Secret Crypto Gold File.
.KEY	Business Key Accounting File (Universal Systems).
.KEY	Keynote Presentation Wrapper Folder (Apple Computer).
.KEYBOARD	Amaya Configuration.
.KE_	Ntgraph Ze32v215 File.
.KF2	Max Payne Model File (Rockstar Games).
.KFA	Dark Age of Camelot Animation.
.KFP	Kinkos File Prep Tool.
.KFS	Max Payne Model File (Rockstar Games).
.KFT	Matrox X Tools Keyframe (Matrox Electronic Systems Ltd.)
.KFX	2D Graphic.
.KFX	KoFax Group 4 Image.
.KGB	Kremlin Encrypt File.
.KGB	Z80 Spectrum Emulator Snap/File Formats.
.KGP	Image.
.KIC	Kodak Image Compression File (Kodak).
.KID	Tonline Bsw4 Install Mdmimp File.
.KIF	AutoCAD Key Index (Autodesk).
.KIF	Knowledge Interchange Format Draft Proposition.
.KIL	Interview File.
.KIM	Commodore KIM-1 Program Image File.
.KIN	Kinemage Chemical Test.
.KIN	Protein Structure.
.KIT	Power Chord Drum Kit.
.KIT	Raven Toolkit File.
.KIT	Battery Drum Kit (Native Instruments).
.KIX	KiXtart Script.
.KIZ	Kodak Digital Postcard File.
.KIZ	UUencoded File.
.KJV	TheWord & Bible Companion King James Version Bible.
.KKT	TTSKONE.
.KKW	RoboHELP Keyword Help Project Index File.
.KLB	GraphicWorks Album.
.KLB	Klemmbretter.
.KLD	Dungeon Keeper 2 Playable Map (Electronic Arts, Inc.)
.KLI	KalKulator Linear Algebra File.
.KLIP	KlipFolio Klip.
.KLN	COLOGNE Multilingual Transliteration Scheme.
.KM	BMC Software Patrol File.
.KMA	Kodak Memory Album.
.KMD	ABSTAT for Windows Batch File (AndersonBell Corp).
.KMD	AIMAX Keyboard Macro (TA Engineering).
.KMD	Clicker Module Output.
.KMD	Media Desktop File (Kaaza).
.KMD	Model Browser File (Metis).
.KML	Emu48 Emulator File.
.KML	HP48 Emulator Win48 Script.
.KML	Kedit Macro Library.
.KMN	SIL Hebrew Font System Keyboard.
.KMP	Korg Trinity KeyMaP File.
.KMS	Model Browser Shortcut (Metis).
.KMV	Model Browser File (Metis).
.KM_	Seqmax Seqprest Compressed Audio File.
.KNF	Personal Knowbase Custom Import Filter (Bitsmith Software).
.KNF	Universal Flat Knitting Machine Pattern Design.
.KNF	Orchida Knitting System (Orchida Soft).
.KNN	Clarion for Windows Database Key (SoftVelocity).
.KNO	Personal Knowbase Data (Bitsmith Software).
.KNW	Known Problems.
.KO	IBM/Tools/Updater File.
.KOA	Koala Paint C64 Bitmap.
.KOD	Code.
.KOE	Turbo Pascal DOS File (Borland).
.KOK	DEL MP3 Karaoke.
.KON	Konfabulator Widget Code (Konfabulator).
.KOR	Korean Text File.
.KOR	Correction File.
.KOS	MicroType Pro Document.
.KOSIMA	Kosima File.
.KPD	Kapital Database File (K Software).
.KPF	Kapere.
.KPG	Kai'S Power Goo Graphic.
.KPL	Kazaa Playlist.
.KPL	KPL Source Code.
.KPP	Kudo Place Pack, Place Module.
.KPP	SmartPad Toolpad.
.KPP	Kid Pix Deluxe Slide Show (Broderbund).
.KPR	Fifa World Cup Game Data Comon be File.
.KPR	KPresenter Slide Show (KOffice Web Team).
.KPS	IBM KIPS Bitmap.
.KPT	KPresenter Template (KOffice Web Team).
.KPX	Kid Pix Deluxe Data File (Broderbund).
.KQL	Kyle's Quest Level Editor Graphic (Crimson Fire Entertainment).
.KQP	Konica Quality Picture.
.KR1	Kurzweil 2000 Sample.
.KRC	Mouse and Key Recorder Recorded File (Kra-Tronic Corporation).
.KRIS	Kris Tracker Format Song.
.KRN	NBA99 Ice Hockey Foreground Font.
.KRP	HiCAD 3D Part File (ISD Benelux B.V.)
.KRX	Karaoke MIDI File.
.KRY	Herolab Krypten.
.KRZ	Kurzweil 2000 Sample.
.KS	Works Sheet (Microsoft).
.KS	SOF Game File Log.
.KSC	Korg Trinity Script.
.KSE	Keepsake Studio Export File.
.KSF	Korg Trinity Sample.
.KSF	Kick it Up Stepfiles.
.KSH	Prodigy Internet Registration File.
.KSH	UNIX Shell Script.
.KSH	Dazzle Dazzle Realization.
.KSHRC	UNIX Kom Shell Environment File.
.KSL	Karaoke Song List Creator Song List (Airwer).
.KSM	Kefrens-Sound Machine Format Song.
.KSM	Embroidery File Format for Pfaff Machines.
.KSM	Ken Silverman Music Format.
.KSS	K-ForCE Scoresheet File (Stephan Rakonza).
.KSS	KDE [UNIX/Linux Desktop] Screen Saver (KDE).
.KST	Olivetti Olitext Plus Script File.
.KTI	Kelvin TOP-SET Investigator Investigation Data (The Kelvin Consultants Limited).
.KTK	Kutoka's Mia.
.KTP	Clarion for Windows Temporary Key File (SoftVelocity).
.KTT	KeyText Data File.
.KU	Knowledge Explorer Knowledge Representation Knowledge Unit.
.KUMAC	Physics Analysis Workstation Macro File.
.KUP	Karaoke Song List Creator (Airwer).
.KVB	Klick-N-View Business Cards.
.KVQ	Sega Smash Pack PC Version File (Sega).
.KVT	BASIC QuickBAS QuickB03 File.
.KW$	NTgraph Visual C Wizzard File.
.KWB	KeyWord Braille File (Pulse Data International Ltd).
.KWD	Keyword.
.KWD	KWord File.
.KWD	Dungeon Keeper 2 Playable Map (Electronic Arts, Inc.)
.KWF	Delphi Pascal Chart.
.KWF	Kartex.
.KWI	Navigation System Data File (KIWI Format).
.KWS	Kyocera Ringtone.
.KXS	Kexis Lossless Compressed Audio.
.KYB	Keyboard Layout.
.KYE	Kye Game Data.
.KYF	Visual-Voice Mouth Movement File.
.KYS	SourceOffSite Server Keys.
.KYS	Photoshop CS Keyboard Shortcut (Adobe).
.KZP	Kazoo3D or KazooStudio KazooPicture.
L	Description
.LGC	Program Use Log File (for Windows Program Use Optimization).
.LGO	Contains the code for displaying the screen logo.
.LOG	Contains the process of certain steps, such as when running scandisk it will usually keep a scandisk.log of what occurred.
.LNK	Windows shortcut or a HTML link file used with Microsoft Internet Explorer.
.LWP	Lotus Wordpro 96/97 file.
M	Description
.MAC	Macintosh macpaint files.
.MBX	Microsoft Outlook Express mailbox file.
.MD	Compressed Archive file.
.MDA	Microsoft Access Add-in / Microsoft Access 2 Workgroup.
.MDB	Microsoft Access Database / Microsoft Access Application.
.MDE	Microsoft Access Database File.
.MDF	Menu definition file.
.MDL	Digitrakker Music Module / Rational Rose/Quake model file.
.MDM	Telix Modem Definition.
.MDN	Microsoft Access Blank Database Template.
.MDP	Microsoft Developer Studio Project.
.MDT	Microsoft Access Add-in Data.
.MDW	Microsoft Access Workgroup Information.
.MDX	dBase IV Multiple Index.
.MDZ	Microsoft Access Wizard Template.
.MEB	WordPerfect Macro Editor bottom overflow file.
.MED	WordPerfect Macro Editor delete save / OctaMed tracker module.
.MEM	WordPerfect Macro Editor macro / Memory File of variables.
.MID	Midi orchestra files that are used to play with midi sounds built within the sound card.
.MIX	Power C object file / Multiplayer Picture file (Microsoft Photodraw 2000, Microsoft Picture It!) / Command & Conquer Movie/Sound file.
.MKV	Short for Matroska, It is similar to a .OGM file and is open source cross-platform movie file.
.MOD	Winoldap files that support (with grabbers) data exchange between DOS apps and Windows apps.
.MOV	File used with Quick Time to display a move.
.MP1	MPEG audio stream, layer I.
.MP2	MPEG audio stream, layer II.
.MP3	MPEG audio stream, layer III, High compressed audio files generally used to record audio tracks and store them in a decent sized file available for playback. See our MP3 page for additional information.
.MPP	Microsoft Project file.
.MPG	MPEG movie file.
.MSN	Microsoft Network document / Decent mission file.
.MSP	Microsoft paint file format.
.MTF	Windows metafile.
.MTH	Derive Math file.
.MTM	Sound file / MultiTracker music module.
.MTV	Picture file.
.MTW	Minitab data file.
.MU	Quattro menu.
.MUL	Ultima Online game.
.MUP	Music publisher file.
.MUS	Audio file.
.MVB	Database file / Microsoft multimedia viewer file.
.MVE	Interplay video file.
.MVF	Movie stop frame file.
.MWP	Lotus Wordpro 97 smartmaster file.
.MXD	ArcInfo map file.
.MXT	Microsoft C Datafile.
.MYD	Make your point presentation file.
N	Description
.N64	Nintendo 64 Emulator ROM image.
.NA2	Netscape Communicator address book.
.NAB	Novell Groupwise address book.
.NAP	Napster Music security definition file.
.NDF	NeoPlanet Browser file.
.NDX	Indexed file for most databases.
.NES	Nintendo Entertainment system ROM image.
.NIL	Norton guide online documentation.
.NGF	Enterasys Networks NetSight file.
.NHF	Nero HFS-CD compilation or  a general Nero file.
.NIL	Norton icon lybrary file.
.NLB	Oracle 7 data file.
.NLD	ATI Radeon video driver fil.
.NMI	SwordSearcher file.
.NON	LucasArts Star Wars - Tie fighter mouse options file.
.NOW	Extension commonly used for readme text files.
.NRA	Nero Audio CD file.
.NRB	Nero CD-ROM boot file.
.NS2	Lotus Notes 2 database.
.NS5	Lotus Notes Domino file.
.NSO	NetStudio easy web graphics file.
.NT	Windows NT startup file.
.NUM	File used with some Software Manufactures to store technical support numbers or other phone numbers, should be readable from DOS and or Windows.
O	Description
.OCA	Control Typelib Cache.
.OCX	Object Linking and Embedding (OLE) control extension.
.OGM	A Ogg Media File, OGM files are movie files.
.OLB	Object library.
.OLD	Used for backups of important files incase they are improperly updated or deleted.
.OLE	Object Linking and Embedding object file.
.OLI	Olivetti text file.
.ORI	Original file.
P	Description
.PAB	Personal Address Book, file used with Microsoft Outlook.
.PB	WinFax Pro phone book file.
.PBD	PowerBuilder dynamic library / Faxit phone book file.
.PBF	Turtle Beach Pinnacle bank file.
.PBK	Microsoft phonebook file.
.PBL	PowerBuilder library file.
.PBM	UNIX portable bitmap fuke.
.PBR	PowerBuilder resource.
.PBI	Profiler binary input file.
.PBM	PBM portable bit map graphic.
.PBO	Profiler binary output.
.PBT	Profiler binary table.
.PCX	Microsoft Paint, PC Paintbrush Windows/DOS.
.PDA	Bitmap graphic file.
.PDB	TACT data file.
.PDD	Adobe PhotoDeluxe Image.
.PDF	Adobe Acrobat Reader file.
.PDL	Borland C++ project description language file.
.PDS	Graphic file / Pldasm source code file.
.PDV	Paintbrush printer driver.
.PDW	Professional Draw document.
.PIC	Picture / Viewer Frame Class.
.PIF	Program Information File that configures a DOS app to run efficiently in windows.
.PJF	Paintjet soft font file.
.PKG	Apple Newton File, MicroSim PCBoard External ASCII file, Microsoft Developer Studio Application File,  Next installer script.
.PL	Harvard palette file or PERL program file.
.PL3	Harvard chart palette.
.PLB	Foxpro library / LogoShow Screensaver file.
.PLC	Lotus Add-in.
.PLD	PLD2 source file.
.PLG	REND386 / AVRIL file.
.PLI	Oracle 7 data description.
.PLL	Prelinked library.
.PLM	DisorderTracker2 module.
.PLN	WordPerfect spreadsheet file.
.PLR	Descent Pilot file.
.PLS	WinAmp MPEG playlist file / DisorderTracker 2 Sample file / Shoutcast file / MYOB data file.
.PLT	AutoCAD HPGL vector graphic plotter file / Gerber sign-making software file / Betley's CAD Microstation driver configuration for plotting.
.PLY	Autodesk polygon.
.PP	Compressed archive file.
.PP4	Picture Publisher.
.PP5	Picture Publisher.
.PPA	Power Point Add-in.
.PPB	WordPerfect Print preview button bar.
.PPD	PostScript Printer description.
.PPF	Turtle Beach Pinnacle program file.
.PPI	Microsoft PowerPoint graphic file.
.PPL	Harvard (now Serif) Polaroid Palette Plus ColorKey Driver.
.PPM	PBM Portable Pixelmap Graphic.
.PPO	Clipper Preprocessor Output.
.PPP	Serif PagePlus Publication.
.PPS	Microsoft PowerPoint Slideshow.
.PPT	Microsoft PowerPoint presentation.
.PPX	Serif PagePlus publication.
.PPZ	Microsoft PowerPoint Packaged Presentation.
.PS2	File to support the Micro Channel Architecture in 386 Enhanced mode.
.PSD	Adobe Photoshop image file.
.PST	Post Office Box file used with Microsoft Outlook usually mailbox.pst unless named otherwise.
.PWA	Password agent file.
.PWD	Password file.
.PWF	ProCite Workforms.
.PWL	Password file used in Windows 95 and Windows 98 is stored in the Windows directory.
.PWP	Photoworks image file.
.PWZ	PowerPoint wizard.
.PX	Paradox primary database index file.
.PXL	Pocket Excel worksheet file.
.PY	Python script file.
.PYC	Compiled Python script file.
.PYD	Python binary extension for Windows.
.PYW	Python GUI script for Windows.
.PZ2	Curious Labs Poser pose file.
.PZ3	Curious Labs Poser document.
.PZA	MGI PhotoSuite album file.
.PZD	Pizazz Plus default settings file.
.PZL	Puzzle file or Load Runner game puzzle file.
.PZO	Pizazz Plus overlay file.
.PZP	MGI PhotoSuite project file.
.PZS	Pizazz Plus settings file.
.PZT	Pizazz Plus transfer file.
.PZX	Pizazz Plus swap file.
Q	Description
.QIC	Windows backup file.
.QT	Quick Time Movie File.
.QXD	Quark Express file.
.QXL	Quark Xpress element library.
.QXT	Quark Xpress template file.
R	Description
.RA	Real Audio file.
.RAM	Real Audio file.
.RAR	Compressed file similar to .ZIP uses different compression program to extract. See our recommended download page for a program that can be used to extract .RAR files.
.RAS	File extension used for raster graphic files.
.RD1	Descent registered level file.
.RD3	Ray Dream designer graphics file / CorelDraw 3Dfile.
.RD4	Ray Dream designer graphics file.
.RD5	Ray Dream designer graphics file.
.RDB	TrueVector rules database.
.RDF	Resource description framework file / Chromeleon report definition.
.RDL	Descent registered level file / RadioDestiny radio stream.
.RDX	Reflex data file.
.REC	Sound file used with Windows Sound Recorder.
.RLE	Run Length Encoded file. See RLE definition for additional information.
.RMI	Microsoft RMID sound file.
.RPB	Automotive diagnostic file.
.RPD	Rapidfile database.
.RPM	Red Hat Package Manager / RealMedia Player file.
.RPT	Various Report file.
.RTF	Rich Text Format file. See our RTF dictionary definition for additional information.
.RWZ	Microsoft Outlook rules wizard file.
S	Description
.SAV	File that usually contains saved information such as a saved game.
.SC2	Maps used in Sim City 2000.
.SCP	Dialup Networking script file.
.SCR	Source files for the .INI files, or sometimes may be used as screen savers.
.SD	Sound Designer I audio file.
.SD2	Sound Designer II flattened file / Sound Designer II data fork file / SAS database file.
.SDA	StarOffice drawing file / SoftCuisine data archive.
.SDC	StarOffice spreadsheet.
.SDD	StarOffice presentation.
.SDF	Standard data format file / Schedule data file / System file format / Autodesk mapguide spatial data file.
.SDK	Roland S-series floppy disk image.
.SDL	SmartDraw library.
.SDN	Small archive.
.SDR	SmartDraw drawing.
.SDS	StarOffice chart file / Raw MIDI sample dump standard file.
.SDT	SmartDraw template.
.SDV	Semicolon divided value file.
.SDW	Sun Microsystems StarOffice file document file similar to the Microsoft Office .DOC file.
.SDX	MIDI sample dump standard files compacted by SDX.
.SEA	Short for Self Extracting Archive. Compressed file used with the Macintosh.
.SH	Archive file.
.SH3	Harvard (now Serif) presentation file.
.SHB	Corel Background file.
.SHG	Hotspot Editor Hypergraphic.
.SHK	Apple Macintosh Compressed Archive file.
.SHM	WordPerfect Shell Macro.
.SHP	3D Studio Shapes File / other 3D related file.
.SHR	Archive file.
.SHS	Shell scrap object file.
.SHTML	See our SHTML definition page.
.SHW	Corel presentation / WordPerfect Slide Show / Show File.
.SLK	Multiplan file. / Microsoft Excel symbolic link.
.SND	Sound Clip file / Raw unsigned PCM data / AKAI MPC-series sample / NeXT sound / Macintosh sound resource file.
.SNG	MIDI song.
.SNM	Netscape Mail.
.SNO	SNOBOL program file.
.SNP	Snapview snapshot file.
.SUM	Summary file.
.SWF	Macromedia Flash file.
.SWP	Extension used for the Windows Swap File usually Win386.Swp. This file is required by Windows and generally can grow very large in size sometimes up to several hundred megs. This file is used to swap information between currently running programs and or memory. If this file is deleted from the computer Windows will be unable to load and will need to be reinstalled.
.SYS	System and peripheral drivers.
T	Description
.TDF	Trace Definition File used with OS/2.
.TGA	Targa file.
.TIF	Tag Image Format that includes most 24-bit color.
.TLB	Remote automation truelib files / OLE type library / Visual C++ type library.
.TLD	Tellix file.
.TLE	NASA two-line element set.
.TLP	Microsoft project timeline fie.
.TLT	Trellix web design file.
.TLX	Trellix data file.
.TMP	Temporary files.
.TRM	Windows Terminal.
.TXT	Text file that can be read from windows of from DOS by using the Edit, Type, or Edlin.
U	Description
.UNI	MikMod (UniMod) format file / Forcast Pro data file.
.UNK	Unknown file type, sometimes used when a file is received that cannot be identified.
.UNX	Text file generally associated with UNIX.
.URL	File used with some browsers such as Internet Explorer linking you to different web pages. Internet Shortcut.
V	Description
.VB	VBScript file.
.VBA	vBase file.
.VBD	ActiveX file.
.VBE	VBScript encoded script file.
.VBG	Visual Basic group project file.
.VBK	VisualCADD backup file.
.VBL	User license control file.
.VBP	Visual Basic project file.
.VBR	Remote automation registration files.
.VBS	Microsoft Visual Basic Script file for quick programs and in some cases can be used as a virus file.
.VBW	Visual Basic project workplace.
.VBX	Visual Basic extension file.
.VBZ	Wizard launch file.
.VC	VisiCalc Spreadsheet file.
.VCD	VisualCADD Drawing file.
.VCE	Natural MicroSystems voice file.
.VCF	vCard File / Vevi Configuration file.
.VCS	Microsoft Outlook vCalander file.
.VCT	FoxPro class library.
.VCW	Microsoft Visual C++ workbench information file.
.VCX	FoxPro class library.
.VDA	Targa bitmap.
.VDD	Short for Virtual Device Driver. Additional information can be found here.
.VDO	VDOScript file.
.VDX	No such file extension - Likely you meant to .vxd.
.VM	Virtual Machine / Virtual Memory file.
.VMM	Virtual Machine (Memory Manager) file.
.VMF	Ventura font characteristics file / FaxWorks audio file.
.VS2	Roland-Bass transfer file.
.VSD	Visio drawing.
.VSL	GetRight download list file.
.VSS	Visio stencil.
.VST	Video Template / Truevision Vista graphic / Targa Bitmap.
.VSW	Visio workspace file.
.VXD	Windows system driver file allowing a driver direct access to the Windows Kernel, allowing for low level access to hardware.
W	Description
.WAB	Microsoft Outlook Express personal address book.
.WAD	File first found in IdSoftware games such as DOOM, Quake, as well as most new games similar to these.
.WAV	Sound files in Windows open and played with sound recorder.
.WB1	Quattro Pro Notebook.
.WB2	Quattro Pro Spreadsheet.
.WBF	Microsoft Windows Batch File.
.WBK	Wordperfect document / workbook.
.WBT	Winbatch batch file.
.WCD	Wordperfect macro token list.
.WCM	Microsoft Works data transmission file / Wordperfect Macro.
.WCP	Wordperfect product information description.
.WDB	Microsoft Works database.
.WEB	Web source code file.
.WFM	dBASE Form object.
.WFN	CorelDRAW font.
.WFX	Winfax data file.
.WG1	Lotus 1-2-3 worksheet.
.WG2	Lotus 1-2-3 for OS/2 worksheet.
.WID	Ventura publisher width table.
.WIN	Foxpro - dBASE window file.
.WIZ	Microsoft Publisher page wizard.
.WK1	Lotus 1-2-3 all versions / Lotus Works spreadsheet.
.WK3	Lotus 1-2-3 for Windows / Lotus 1-2-3 Rel.3.
.WKS	Lotus 1-2-3 Rel lA,2.0,2.01, also file used with Microsoft Works.
.WLG	Dr. Watson log file.
.WMA	Windows Media Audio file.
.WMF	Windows Metafile. Also see WMF dictionary definition.
.WMZ	Windows Media Player theme package file.
.WPD	WordPerfect Windows/DOS.
.WPG	WordPerfect Graphical files Windows/DOS.
.WPM	WordPerfect Macro file.
.WPS	MS Works word processor Windows/DOS.
.WRI	Windows Write.
.WRK	Lotus 1-2 31.0,1.01,1.1/ Symphony 1,1.01.
.WRI	Symphony l.1,1.2,2 / Microsoft Write file.
X	Description
.XIF	Wang image file / Xerox image file.
.XLB	Microsoft Excel File.
.XLS	Microsoft Excel File.
.XM	Sound file / Fast tracker 2 extended module.
.XML	Extensible markup language file.
.XNK	Exchange shortcut.
.XOT	Xnetech job output file.
.XPM	X picsmap graphic.
.XQT	SuperCalc macro sheet.
.XRF	Cross Reference.
.XR1	Epic MegaGames Xargon File.
.XSL	XML Style sheet.
.XSM	LEXIS-NEXIS tracker.
.XTB	LocoScript external translation table.
.XWD	X Windows dump file.
.XWF	Yamaha XG Works file.
.XXE	Xxencoded file.
.XY	XYWrite text file.
.XY3	XYWrite text file.
.XY4	XYwrite IV document.
.XYP	XYwrite III plus document.
.XYW	XYwrite Windows 4.0 document.
Y	Description
.Y	Amiga YABBA compressed file archive.
.Y01	Paradox index file.
.Y02	Paradox index file.
.Y03	Paradox index file.
.Y04	Paradox index file.
.Y05	Paradox index file.
.Y06	Paradox index file.
.Y07	Paradox index file.
.Y08	Paradox index file.
.Y09	Paradox index file.
.YUV	Yuv graphics file.
.YZ	YAC compressed file archive.
Z	Description
.Z	Compressed file that can hold thousands of files. To extract all the files Pkzip or Winzip will need to be used.UNIX / Linux users use the compress / uncompress command to extract these files.
.ZOO	A compressed file.
.ZIP	Compressed file that can hold thousands of files. To extract all the files Pkzip or Winzip will need to be used.
.ZKA	Quicken6 File.
.ZL	Easy CD Creator Drag to Disk File (Roxio).
.ZOM	Amiga Compressed Archive (Amiga).
.ZSH	Unix zsh Shell Script.
.ZSK	Embroidery Machine Stitch File.
.ZZE	ASCII Encoded File Archive.

---

We also provide home tutoring service for certification courses.

Please contact us for any additional information.

---