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If you have a file that you dont know what it is or that you need to know how to open it. Hit CTRL F and type in the extension. click on the links if you need to know how to open them or what program to use. Links provided by http://www.file-extensions.org

.daa	PowerISO Direct-Access-Archive
.torrent	BitTorrent information file
.7z	7z is the compressed archive file
.flac	Audio files encoded by Flac - free lossless audio codec
.cbr	Comic Book Archive file or ComicBook Reader File
.thm	Sonyericsson mobile phone theme file
.wps	Microsoft Works document
.#$#	Unknown or unassigned file extension.
.000	IsoBuster CD/DVD Image File Data Recovery
.3dr	3DMark result
.w02	TEMP file
.bin	Binary file
.psf	Photoshop ProofSetup
.rar	RAR compressed archive. Backup file
.exe	Executable file
.xlsx	Excel 2007 XML Workbook
.zix	WinZix compressed archive file
.zm9	ZSNES Movie #9
.zip	Compressed ZIP archive file and compressed folder
.cdr	CorelDRAW vector image
.b6i	Possibly splitted RAR archive
.m3u	MP3 songs playlist file
.iso	CD/DVD ISO binary image file.
.dotx	Word 2007 XML Template
.001	Compressed file from a multi-volume archive
.dda	Import file format used with TNTmips
.ape	Monkey's Audio Lossless Audio Compression Format
.pptx	PowerPoint 2007 XML Presentation
.bc!	Bittorent unfinished download file
.dat	Generally text or binary datafile
.vcd	Virtual CD-ROM CD Image File
.psf	ArcSoft PhotoStudio File image format
.avi	Audio Video Interleave movie
.docx	Microsoft Word 2007 XML based document file format
.xlsm	Excel 2007 XML Macro-Enabled Workbook
.zm9	ZoneAlarm Mailsafe Renamed .ZIP File
.wdb	Microsoft Works database
.mdi	Microsoft Office Document Imaging file format
.accdt	The file extension for Access Database Templates
.cue	Cue sheet. Description File for a CD-Image (.bin file)
.abr	Adobe Photoshop Brush file
.shs	Shell Scrap Object
.thm	THuMbnail bitmap image used by eg. Picture Publisher and PhotoMagic Thumbnail
.ppsx	PowerPoint 2007 XML Show
.mds	Image file created by burning software
.tao	IsoBuster File
.wpd	WordPerfect document
.mdb	Microsoft Access database
.doc	Microsoft Office Word document
.001	(001-0??) Fresh Download Split File
..bmp	Windows BitMap image or Mac File Type
.tar	Unix standard Archive format, Tape Archive
.cbz	Comic Book Archive file or ComicBook Reader File
.ape	Winamp Plug-ins AVS File
.vsd	FlowChart; Visio Document
.001	Often used as backup file
.zix	Quicken online file
.prt	NX part file
.uwl	Corel WT User Word List
.m3u8	The unicode version of m3u playlist file
.prt	PTC Pro/Engineer Part file
.nco	Nero BackItUp Compressed Backup File (Nero AG)
.docm	Word 2007 XML Macro-Enabled Document
.psp	Photoshop Preferences File
.tmp	temporary file
.djvu	DjVu File AT&T
.pdf	Portable document format: Adobe Acrobat File
.7zip	7z compressed archive file
.cwk	Claris Works data file
.xls	Microsoft Office Excel spreadsheet
.srt	Movie subtitle file format
.cdr	Corel Draw Bitmap (preview) image format
.psd	Adobe Photoshop graphics
.003	Compressed file from a multi-volume archive
.ratDVD	ratDVD commpressed DVD movie
.psb	Photoshop's Large Document Format
.amr	Adaptive Multi-Rate compressed audio
.ai	Adobe Illustrator graphics
.pptm	PowerPoint 2007 Macro-Enabled XML Presentation
.dbf	Database file (many db programs, originaly only dBASE)
.bmp	standard Windows Bitmap image (also OS/2 )
.001	(001-999) HJSplit File
.flv	Flash video file
.fdb	Database file, FoxPro, Firebird
.001	Hayes JT FAX fax
.xpi	Firefox browser extension
.930	Unknown or unassigned file extension.
.dmp	Memory dump, screen dump, junk files...
.wps	Rockbox Theme
.a01	Compressed and splitted ARJ archive file (part1)
.001	Fax data file
.cfg	Configuration file
.nrg	Nero-Burning Rom (CD-burn image)
.asc	ASCII-text
.mp3	Compressed audio, music file
.eps	Adobe Illustrator text and graphics (Encapsulated PostScript)
.mp4	MPEG-4 file format
.3gp	Multimedia files for wireless networks
.wba	WindowBlinds Desktop visual style
.tla	TLA - The Temporal Logic of Actions

.jpg	JPEG Image
.ldb	MS Access Record-Locking Information
.img	Bitmap Graphic (several programs)
.swf	ShockWave Flash, Animated Vector Format for Internet
.xvid	XviD Codec
.lwp	Lotus Word Pro file
.ace	Compressed file archive
.psp	PaintShop Pro Image
.mpc	MusePack Audio file
.prt	Solid Edge part file
.tga	Truevision TarGA bitmap image (may be RLE compressed)
.kml	Keyhole Markup Language file
.dbf	data base file for FoxPro
.aspx	ASP.NET script, page
.sav	Generally saved game file type.
.vcd	VisualCADD Drawing File
.sub	Movie subtitle file format
.sav	Configuration data file
.PlayList	PlayList file
.8bf	Plug-in filter for Adobe-compatible paint programs dll
.c4d	CINEMA 4D file format
.ofm	PostScript font description file
.vcd	VirtualDrive CD Image File
.fla	Editable Adobe Flash Movie
.sqm	SoftQuad XMetaL File
.001	Drivespace Virtual Drive
.vhd	Virtual Hard Disk file
.bas	Basic source code
.rar	Mime: application/rar
.001	Ghost Disk Image Span File
.sqm	Microsoft Service Quality Monitoring file
.bik	Video file
.txt	Text file
.jpg	JPEG image file
.adp	Microsoft Access project file
.thm	Sony-Ericsson Thumbnail file
.emf	Enhanced Windows Meta-file picture
.pk4	Doom 3 packed file
.potx	PowerPoint 2007 XML Template
.mdi	MIDI-sequention sound
.dgn	MicroStation Vector graphics (CAD drawing)
.m4p	iTunes Music Store Audio File
.jef	Customizer 11000 Embroidery Layout Software File
.vob	MPEG-2 movie
.001	Tagged Image Format File
.cgr	CATIA MultiCAx plug-in conversin file
.shn	Shorten compressed audio file, lossless format but larger than MP3
.dcm	DICOM: Digital Imaging and Communications in Medicine image file format : Bitmap graphics
.mov	Apple QuickTime Movie file, standard Macintosh video format
.cab	Windows Cabinet Compressed Archive
.gxt	GTA2 Game File
.mdf	Alcohol 120% Disc Image
.jpeg	JPEG image, picture file format. Mac File Type.
.exe	Mime: application/octet-stream
.ppt	Microsoft Office PowerPoint Presentation file format
.b3d	BodyPaint 3D Format
.cpt	Corel PHOTO-PAINT bitmap
.8ba	Adobe PhotoShop Import dll
.mdf	Menu Definition File
.pfb	Adobe Type Manager : Type 1 PostScript font
.ops	Office Profile Settings File
.vcd	Video CD file
.kmz	Compressed Keyhole Markup Language file
.b5t	BlindWrite image file
.jef	DigitizerPro Embroidery Software file
.accdb	The file extension for the new Office Access 2007 file format.
.3ds	3D graphics file
.sav	Saved backup file
.mpg	MPEG 1 video file format
.vy3	VY3 is Samsung Yepp VY-H350H Digital Voice Recorder format
.8li	Adobe Photoshop Plugins file
.dds	Direct Draw Surface
.sgm	Visual Boy Advance Saved State File
.exe	Mime: application/x-msdownload
.djv	DjVu File Bitmap graphics
.fpx	Kodak FlashPiX bitmap image
.xhtml	Libxml Html file
.lnk	Windows Shortcut file, link
.otf	Open type font file format
.wri	Windows Write Document
.psf	ChiWriter - Outline PostScript printer font
.wav	WAVe PCM Sound, standard Windows sound format
.html	Web page file - Hypertext Markup Language
.php	PHP script, page
.ecw	Enhanced Compressed Wavelet image format
.r30	RAR compressed files from a multi-volume archive
.fsh	EA Sports FSH format
.chk	File fragments saved by ScanDisk, CHKDSK or Windows Disk Defragmenter
.cda	CD Audio track
.002	Compressed file from a multi-volume archive
.ade	Microsoft Access project extension file
.cam	Casio QV digital CAMera image
.rdp	Microsoft Windows Remote Desktop Connection settings
.dot	MS Word Document Template
.ppsm	PowerPoint 2007 Macro-Enabled XML Show
.m3u	Highly compressed audio
.003	Driveimage5 Setup file
.aud	Winamp media file
.wm	Windows Media Audio or Video file
.xltx	Excel 2007 XML Template

.wm	Windows Media Audio or Video file
.srt	Skymap data file
.tvv	Format used by TV NOW Portable Video Recorder
.386	Virtual device driver (Windows 386 enhanced mode), Swap file
.bat	Batch file (executable)
.zip	Mime: application/x-compressed
.rm	RealMedia
.x_t	Parasolid document
.rq5	Unknown or unassigned file extension.
.exe	Self-extracting archive
.nwp	NEC-Win Plus proprietary file format
.kdb	Encrypted passwords database file
.wmf	Windows Metafile; vector drawing - clipart.
.raa	Unknown or unassigned file extension. See .ra file extension
.dap	MS Access Data Access Page
.3gp	Nokia 7650 Video Recorder Video File
.sfv	Easy SFV Creator
.vcd	Mime: application/x-cdlink
.ani	Animated cursor
.sql	Structured Query Language Data SQL
.rel	Nokia Phone Audio File
.mno	Macromedia Dreamweaver configuration commands, _notes file
.ogg	Ogg Vorbis audio file open-source music encoder http://www.xiph.org/ogg/vorbis
.000	Common filename extension
.jar	compressed file package for Java classes and data: Java Class Archive
.mdi	Borland multiple document interface
.fb	Backup file made by Novell (DR)Dos' FastBack Express (fbx.exe)
.dts	Digital Surround Audio File Format
.dotm	Word 2007 XML Macro-Enabled Template
.sga	Relic Entertainment SGA Archive
.gci	GTA2 Game File
.img	image file
.tta	TAU Producer file - TTA Lossless audio codec
.tmd	TextMaker 6.0 up to 2006
.3d	Three-dimensional drawing file
.prt	CADkey Part file
.vxd	Microsoft Windows virtual device driver, 32 bit
.wpd	ACT! Word Processor Document
.ifo	DVD datafile
.crw	Canon Digital Camera Raw Image Format
.fon	Bitmap font with fixed size
.vsv	Virtual machine's memory saved-state file
.js	JavaScript file
.dcx	Image Zsoft PC Publisher's Paintbrush (multi-pcx file)
.m4v	MPEG-4 video file format
.accde	Office Access 2007 files that are in "execute only mode
.2d	Two-dimensional drawing file
.com	Compiled executable program
.cso	Customer service data and outcome file
.rtf	Rich Text Format document
.001	(001-0??) Cutkiller Start of a Split File Sequence
.r02	RAR compressed files from a multi-volume archive
.shs	W95/98 Clipboard
.snp	Access 97 report Snapshot
.plmxml	plmxml - xml document format
.xlsb	Excel 2007 Binary Workbook
.pcf	Packaged collaboration files
.#$0	Unknown or unassigned file extension.
.xml	XML document
.tif	Aldus Tagged Image File Format (TIFF) bitmap image
.pcx	PC Paintbrush Bitmap
.aco	Adobe Color Palette and Swatches file
.csv	Comma Separated Value file
.jc!	FlashGet File
.kdb	Doobs Database
.ini	Text configuration file
.sc4	Game file format
.cpp	C++ source code file format
.3ds	Autodesk 3D Studio 3D scene
.htm	Web page - HTML file
.xp3	Unknown or unassigned file extension.
.0bu	Unknown or unassigned file extension.
.iso	CALS ISO 8613: Bitmap graphics
.svf	Simple Vector Format
.ahk	AutoHotkey Script
.qsp	QSetup Installation Suite
.001	International S-57 Hydrographic Data Electronic Navigation Chart
.cr2	Canon Digital Camera Raw Image Format version 2.0
.aud	Audio file used by Westwood Studios for various games
.cur	Windows 3.x/95/NT Cursor Resource
.iw44	DjVu Format
.r00	RAR compressed files from a multi-volume archive
.#$$	Unknown or unassigned file extension.
.theme	Windows Desktop Theme
.nwp	Materials palette file
.jt	DirectModel documents
.wpd	SAW Soud processing file
.chm	Microsoft Compiled HTML help file
.wmv	Windows Media Video
.accdr	Access 2007 file that enables you to open a database in runtime mode
.nwp	Noteworthy Player file type
.ttf	TrueType Font, variable size
.001	SwiftView ICS Command File
.000	ARJ Multi-volume Compressed Archive
.#$1	Unknown or unassigned file extension.
.cmd	Windows NT Command Script
.dat	Extension used for some MPEG files
.uwl	WordPerfect User Word List
.zip	Mime: application/x-zip-compressed
.gif	CompuServe bitmap image (Graphics Interchange Format),widely used Internet Format

.uwl	WordPerfect User Word List
.zip	Mime: application/x-zip-compressed
.gif	CompuServe bitmap image (Graphics Interchange Format),widely used Internet Format
.001	(000 - Any Number) Totem Cash Ad File
.pgt	DHTML menu file
.avs	Winamp Advanced Visualization Studio
.aup	Audacity project file
.avs	Avid Settings file
.nef	Nikon Digital SLR Camera Raw Image File
.raf	Fuji CCD-RAW Graphic File
.&&&	Usually temporary file
.uif	WordPerfect for Win long prompts for Windows
.sub	CloneCD related file
.b00	Graphics
.qxd	QuarkXPress document
.flt	Adobe Illustrator Filter
.007	International S-57 Hydrographic Data Electronic Navigation Chart
.sab	3D ACIS Binary File
.mdn	Microsoft Access blank database template
.ps	MSWORKS file
.tar	Mime: appliation/x-tar
.wba	Winace Zip File
.dmt	Delphi Runimage Delphi Bin file
.wmz	Windows Media Player skins file
.vhd	Quartus II VHDL Design File
.mdml	Markdown markup language
.dxf	3d graphic drawing file
.nwc	Noteworthy Composer Song File
.ps	Adobe PostScript file
.clp	Windows Clipboard
.dat	WordPerfect : Merge data
.psf	MicroStation Plot specification file
.8bi	Photoshop Plugins Formats file
.wmd	Windows Media Player Download Package
.qtz	Quartz graphics file
.dts	Directory toolkit script
.$db	dBASE temporary file
.exe	Self-displaying image
.nwp	Magentic content file
.aud	DTS sound data stream file format
.ascii	ASCII text characters file (sometimes Text graphics)
.mds	Directx Mid2stream file
.iww	Unknown or unassigned file extension.
.eml	Mime: message/rfc822
.wma	Windows Media Audio
.bin	Audio format(short ints,no header)
.cf2	Common File Format 2
.dar	DAR disk archive
.pef	Pentax Digital Camera Raw Image Format
.002	Driveimage5 Setup file
.easm	SolidWorks eDrawing Asembly file
.dbl	LineWriter file
.icd	Rayman2 game file
.SMR	Sid Meier's Railoads save game file
.max	Paperport
.psf	PowerSoft Report File
.sldprt	SolidWorks drawing 3D (Vector graphics)
.gzip	GZIP compressed archive file
.$$$	Temporary file
.arj	Compressed file archive - ARJ archiver
.000-20009	Mostly backup file formats divided into multiple numbered files
.dat	Video CD MPEG movie MPEG1
.000-999	Often backup versions of files
.rel	ACT! Alarm Data File
.pnm	PBM - Portable anymap, bitmap graphics
.ppm	Portable Pixelmap Graphic
.ixv	Unknown or unassigned file extension.
.wpk	Nero Wave Editor file
.mdb	MS file Viewer
.vcf	VirtualDub Processing Settings
.cue	Microsoft Cue Cards data
.img	Disk Copy, ShrinkWrap : Disk Image
.png	Portable (Public) Network Graphic
.pf	Windows prefetch file
.pfn	Portable Bitmap File
.icd	Targa file
.abf	Adobe Binary Screen Font
.pat	Corel Vector Pattern
.php5	PHP script version 5 (HyperText PreProcessor)
.bmp	Mime: image/bitmap
.cdr	Raw audio-CD data
.xml	Extensible Markup Language file
.kgb	Z80 Spectrum Emulator Snap/File Formats
.pps	PowerPoint Slideshow
.m4a	MPEG-4 compressed audio file
.bin	machine language
.dxf	AutoCad Drawing eXchange Format
.eqf	WinAmp equalizer settings file
.dts	Data Transformation Services
.kf	Game file, some graphics
.odt	Unknown or unassigned file extension.
.kdb	kinodb File
.java	Java language source code file
.xls	Mime: application/excel
.gsp	Giza Specifier Project File
.rpc	RAR password cracker project file
.000	HPGL Plot file
.bc	Mikmak 203 file
.eps	Corel-TRACE Encapsulated PostScript
.mp2v	MPEG video file

.000	MS Double Space (eg DBLSPACE.000)
.8bs	Adobe Photoshop 5.0 Sdk Plugins file
.gtar	GNU tar compressed file archive
.gsp	Giza Specifier Project File
.rpc	RAR password cracker project file
.000	HPGL Plot file
.1st	Usually README.1st text file.
.pcd	Kodak Picture CD multiresolution Image
.text	Text file
.vsd	Mime: application/vnd.visio
.vst	Vista Truevision Targa bitmap image.
.doc	Mac File Type
.fdb	Navison Financials database
.flc	Autodesk Animator (AutoDesk FLIC format) (old: .FLI)
.pdf	ArcView : preferences definition file
.swf	Mime: application/x-shockwave-flash
.gsm	Noka LogoManager format
.pt	Page template file
.do	Java servlet file
.pxr	Pixar 3D rendering file
.scpt	AppleScript Script file
.bmf	ByteMap font format
.sub	Rational Rose component package
..wmf	Mac File Type
.asm	Solid Edge assembly file
.bak	Backup file
.dat	MS Word for DOS file
.dmp	ORACLE file
.do	digital line graph optional vestor data
.eta	eTreppid Audio File
.prt	SolidWorks Part file
.8bx	Adobe PhotoShop Plugin Extension
.orf	Olympus Digital Camera Raw Image File
.css	CSS (Cascading Style Sheets) file
.dat	Btrieve Database
.mpeg	MPEG movie
.ra	RealAudio
.006	International S-57 Hydrographic Data Electronic Navigation Chart
.dgd	Unknown or unassigned file extension.
.z2f	Zoo Tycoon 2 file
.abdata	Bridge data
.dib	Device-Independent Bitmap Graphic
.dll	Dynamic Link Library
.flt	Corel filter
.jt	JT Fax Hayes comp.
.lit	Microsoft Reader eBook
.pgm	PBM gray scale bitmap graphics, portable graymap format
.png	Mime: image/png
.z	Unix,compressed, in combin. with tar = taz (modified Lempel-Ziv compression) (Unix SysV pack)
.007	Compressed archive file
.efw	Unknown or unassigned file extension.
.mdv	Workgroup Information Files
.asf	Advanced Systems format
.jpeg	JPEG Image
.org	Lotus organiser file
.pict	Bitmap graphics file format
.ps	PostScript view with Ghostscript viewer
.wvx	Windows Media Video Redirector
...ct	Mac File Type
.qxp	QuarkXpress document file
.#&1	Unknown or unassigned file extension.
.mcl	Microsoft Media Center Application shortcut
.bundle	Type of plugin
.chk	Starcraft Campaign Map
.par	SolidEdge document
.wpd	602PC SUITE Document
.raw	Digital Camera Image Format
.kdb	kusziDataBase Database File
.3mm	Microsoft 3D Movie Maker video file
.dvr-ms	Microsoft Digital Video Recording
.aif	Audio Interchange File Format sound file
.cam	QV-PC 10 Cassio Digital Camera
.dcx	FAX Image
.htaccess	Apache Access Configuration File
.mp2	Sound file (MPEG-1 Layer II Audio Stream)
.iab	Unknown or unassigned file extension.
.ods	OpenDocument Spreadsheet file
.cpl	Windows Control Panel extension
.dap	Omnis5 Application File
.mi	HP CoCreate ME 10 documents
.pcf	Microsoft Source Profiler : Profiler Command File
.smf	Standard MIDI file format
.srf	Sony Digital Camera Raw Image File
.vob	Vue d'Esprit image format
.par	An older version of Solid Edge part file
.acb	Adobe Illustrator ColorBook file
.img	CloneCd Related File
.psb	Pinnacle: Sound Bank file
.psd	Apple Viewer File
.slddrw	Solidworks File
.wv	Mime: video/wavelet
.8by	Photoshop Plugins Formats file
.mkv	Unknown or unassigned file extension.
.931	Unknown or unassigned file extension.
.as	Adobe (formerly Macromedia) Flash action script file
.sab	ALSong Album File
.ops	Dynamite VSP Object Placement Style
.bmp	Alpha Microsystem BMP image format
.nol	Nokia Operator Logo image format
.prt	Attention: file of W32/Parrot-A worm

.ops	Dynamite VSP Object Placement Style
.bmp	Alpha Microsystem BMP image format
.edb	WIN SECURITY file
.nol	Nokia Operator Logo image format
.pbb	MS Mail address information file
.prt	Attention: file of W32/Parrot-A worm
.000	Geoworks Data File
.aww	Ability Write Document
.ece	Unknown or unassigned file extension.
.jpm	JPEG 2000 jpm file format (common name)
.aiff	Audio Interchange File Format
.avs	Bitmap image format
.fdb	font definition block of SWT generator (flash MX)
.log	Log file
.xltm	Excel 2007 XML Macro-Enabled Template
.xlam	Excel 2007 XML Macro-Enabled Add-In
.sxc	OpenOffice.org 1.0 Spreadsheet file
.eta	Keyhole Placemark File
.crt	Internet Security Certificate
.nif	NIFF Navy Image File Format (bitmap) graphics interchange format
.001	Genesis 2000 file
.usx	Unreal Static Meshes file extension
.aca	Agent Character 2
.!!!	Sometimes README text file format
.arp	Aperture file - for other artwork files
.dsf	Micrografx Designer V6.x, V7.x
.nlm	Nokia Logo File image format
.pxr	Photoshop: Bitmap graphics (Pixar image)
.txn	Mfhdf Doc file
.x	Microsoft Direct-X SDK
.wdgt	Dashboard widget
.pwd	SolidEdge document
.dbf	ArcView : Shapefile attribute table file
.dvd	Misc
.imc	game sound similar to wav file format
.dft	SolidEdge document
.atm	Adobe Type Manager file
.big	Michelin (autoroute maps) image format
.com	Common Object Module
.vhd	"Very High-level Design Language" Hardware design document
.pwr	A PWR file is an XPower power report file
.px5	Poker Pal third-party plug-in file
.tk9	Unknown or unassigned file extension.
.as	AppleSingle Encoded File
..0	Compressed harddisk data
.bik	BioCharter Profile Backup
.chk	WordPerfect for Windows temporary file
.dat	Programming
.f	Fortran source files
.itc	Uthscsa Imagetool Calibration file
.mov	AutoCAD AutoFlix MOVie
.mpp	Microsoft Project
.000	CHKDSK Found Folder
.008	International S-57 Hydrographic Data Electronic Navigation Chart
.b6t	Unknown or unassigned file extension.
.esu	LokSound Electronic Sound File
.sgm	Standard Generalized Markup Language IETF SGML Document
.24b	Bitmap graphics (24-bit data)
.lwp	Mime: application/vnd.lotus-wordpro
.r00	Norton Ghost rar file
.vsp	SPX sprite
.zip	Mime: application/zip
.zip	Mime: multipart/x-zip
.936	Unknown or unassigned file extension.
.zix	Caml Light (camlc) debugger file
.cfg	Swisslog System Configuration File
.dat	Antivirus data
.dgn	ArcView Vector graphics (CAD drawing)
.doc	Wordpad text
.eml	Outlook Express EMaiL
.modd	audio modul
.z	Mime: application/x-compress
.!!!	Read Me text file
.gif	Mime: image/gif
.potm	PowerPoint 2007 Macro-Enabled XML Template
.rel	Knowledge Explorer Knowledge Representation Relation
.asp	ASP script, page
.bmp	Mime: image/bmp
.dds	INMOS Transputer Development System Occam Compiler Descriptor
.lnk	Linker response file/script
.mde	Microsoft Access MDE Database
.snp	Shapshot file (Snapview)
.vcf	Outlook Express VCard file
.wk4	Lotus 1-2-3 version 4 spreadsheet
.zma	AAICWpro Mailsafe renamed File = .dll
.$$$	Mostly backup file format - many applications
.pww	Patternland Weave Simulator file format
.rbn	Unknown or unassigned file extension.
.932	Unknown or unassigned file extension.
.dcr	Kodak Digital Camera Raw Image Format
.asc	3D objec, saved as ASCII
.conf	Unix configuration information
.dbf	CLIPPER database
.dwg	AutoCAD Drawing
.rdi	Device independent bitmap file (RIFF RDIB format)
.tif	Mime: image/tiff
.000	Advanced Revelation Database File
.aifc	Audio Interchange File Format sound file with Compression
.ace	Aces200 image format
.dgn	Microstation95 CAD Drawing File

.ace	Aces200 image format
.dgn	Microstation95 CAD Drawing File
.moi	French textfile
.gp	Geoworks Geode parameter file
..0	(0-99) Hacha Split File
.000	International S-57 Hydrographic Data Electronic Navigation Chart
.asc	PGP signature
.opt	MySQL database data file
.pd0	Unassigned file extension
.aa	Audible audio file - downloadable audio books
.avs	Application Visualization System format
.ccd	CloneCd Related File
.dat	MapInfo native data format
.dll	A file containing runtime routines for use with program files.
.hcx	Harvard Chart XL chart
.img	ArcView : ERDAS Imagine image file
.nfo	MsInfo document
.ngg	Nokia Group Graphics image format
.pes	Brother Embroidery file format
.pob	3d Graphics file
.ppt	Microsoft BIFF File
.sldasm	Solidworks File
.tpb	Downloadable PCL Soft font file backup (HiJaak)
.wbmp	Wireless Bitmap (level 0) image format
.!	Screensaver file
.au3	AutoIt Version 3 File
.zo1	Unknown or unassigned file extension.
.!ut	uTorrent incomplete download file
.chk	SSConvert Multilanguage video subtitle data file
.cg4	CALS Group IV : Bitmap graphics
.dat	Word for DOS
.dm	Borland dbase
.efx	Fax (Everex EFax)
.lwp	IBM Works for OS/2 document
.rsm	Mime: model/vnd.gdl
.wb1	Spreadsheet; Quatro Pro for Windows Notebook
.wms	Windows Media Player Skins
.wpd	Windows printer driver
.xfdl	Mime: application/vnd.xfdl
.001	Smartfax
.8bp	Adobe PhotoShop Import
.000	PaperPort Scanned Image
.MYD	MySQL database data file
.exj	Unknown or unassigned file extension.
.mrw	Minolta Diamage Raw Image File
.wdgt	Opera browser widget
.a	Alpha channel image data
.ai	Progress Database After Image file
.ax	Modula-3 linker information for libraries
.bin	Mime: application/x-binary
.ctt	Hotmail List of E-mail Contacts
.dat	May be a propriatary format
.dgn	Intergraph Design Drawing /Vector graphics (CAD drawing)
.php	MS Picture It! Publishing Project File
.sct	SciTex CT (Continuous Tone) bitmap image
.vsd	Mime: application/x-visio
.fbl	Unknown or unassigned file extension.
.#&0	Unknown or unassigned file extension.
.pod	Punch CAD Program
.acbl	Adobe Illustrator ColorBook
.bup	Backup file
.ecw	System Dll file
.ifm	Mime: application/vnd.shana.informed.formdata
.mso	Microsoft Orgchart file
.pod	Perl POD-formated text
.pps	ArcView : processing set codes
.prz	Lotus Freelance Graphics file
.pub	MS Publisher Document
.rfx	Modula M2sds file
.sfk	Sonic Foundry SoundForge : Sound file
.wab	Microsoft Outlook (Address Book file)
.gp3	GuitarPro 3
.006	Compressed archive file
.mv4	Unknown or unassigned file extension.
.wrf	ThinkFree Write document
.z01	Unknown or unassigned file extension.
.#$&	Unknown or unassigned file extension.
.php2	PHP version 2 script (HyperText PreProcessor)
.php3	PHP script, page - version 3
.b3d	3D Builder file
.com	DOS or CP/M executable (COMmand), mostly smaller than 64 Kb
.crmlog	WIN Registration file
.dat	Digital Audio Tape
.dat	Internet Explorer Cache
.dat	Microsoft Exchange Server : Error message in inbound internet email message
.dmg	Macintosh OS X Disk Image File (Treated like a real disk)
.dpg	DPGraph : Mathematical graph
.ecm	Cmpro examples file
.indd	Adobe Indesign Document
.jpg	Mime: image/jpeg
.max	3DStudio Scene
.mht	Message HTML file
.msg	Document; Microsoft Exchange mail document
.ods	NCompass Labs (Internet script/tbv)
.ove	Cakewalk Overture Score
.ps	Mime: application/postscript
.qrp	Dr hardware file
.sta	Statistica : Data file
.trn	Translation (Windows)
.txt	DisplayWrite document

.vem	Voice Email
..pcx	Mac File Type
.baa	Unknown or unassigned file extension.
.t$m	Unknown or unassigned file extension.
.937	Unknown or unassigned file extension.
.sp	SignPlot output format
.c	C programming language source code Borland C++ , CodeWarrior , Microsoft Visual C++
.crb	Cardfile
.cxt	Macromedia Director protected cast file
.dat	VMS Data file
.dvd	Animation
.iff	Amiga IFF/8SVX Interchange File Format : Bitmap graphics
.ifo	Info file
.mbd	Mime: application/mbedlet
.part	Partial Go!Zilla download
.pps	Mime: application/mspowerpoint
.psm	Sound data for Epic's games
.gi	Audio Utility Tuningwrench compressed file
.000	Empower Data File
.ppam	PowerPoint 2007 Macro-Enabled XML Add-In
.emz	Unknown or unassigned file extension.
.ttg	Unknown or unassigned file extension.
.wave	WAVe PCM sound file
.3th	3D Movie Maker Thumbnail Data File (Microsoft)
.cat	Advanced Disk Catalog database file
.aws	Ability Spreadsheet Document
.bin	SGI Powerflip
.dat	WordPerfect Merge Data
.dmp	INMOS Transputer Development System Occam Core Dump
.htm	HyperText Markup Language file (WWW-page)
.ink	Mimio Ink File
.inp	Oracle Source Code
.jpeg	Mac File Type
.mcd	MathCaD file
.mda	Microsoft Access add-in
.mix	image file
.mpg	Mime: audio/mpeg
.out	OUTput
.pa	Print Artist project
.ppt	Mime: application/powerpoint
.raf	Illum src Rk file
.sg	SnapGraphix : Image file
.stp	3d Graphic
.sxw	OpenOffice.org Writer document
.uax	Unreal Audio File
.wk2	Lotus 1-2-3 version 2 spreadsheet
.xps	backup for xport .sps by sharkport
.001	RicohFax
.nbz	Unknown or unassigned file extension.
.amb	Radiance ambient file
.cad	Drafix Windows CAD picture
.cam	Calibrated Camera File Photomodeller
.cdl	CADKey CAD language file
.htr	Scripts that allow Windows NT password services to be provided via IIS web servers
.img	Old or New style Gem Format
.j	Image JPEG / JFIF
.jc	Watcom src file
.msi	Microsoft Installer File, Windows Installer Database
.PHPEditProject	Project file from PHPEdit solution
.rtf	Mime: application/msword
.sig	SIGnature file (ThunderByte AntiVirus/PopMail/PGP)
.sp	Spice : Data
.ssa	Sub Station Alpha : Video file
.wtf	Weird wally screen saver editor file
.gsp	Geometer's Sketchpad Material File
.njb	Unknown or unassigned file extension.
.wjf	Unknown or unassigned file extension.
.#$2	Unknown or unassigned file extension.
.#-7	Unknown or unassigned file extension.
.sga	SEG-A Seismic Data Format
.avs	Avisynth script file
.netrc	.netrc File Format for TCP/IP
.aga	Agenda file
.crc	Check file (Win-SFV32) (Fantasia Software)
.dcm	Mime: x-lml/x-evm
.dvg	Graphics Works list of symbols
.dvr	Program Overlay
.enu	Win Ace204 file
.epb	Mime: application/x-epublisher
.ivp	Beyond 20/20 : User subset profile
.m2	Modula 2 language source
.mpc	Mime: application/x-project
.pcds	Multi-resolution bitmap graphics - Kodak Photo-CD format
.pnf	Windows : Precompiled setup information
.pod	Text file
.prt	Formatted text
.smv	Saved Mail Video
.vmg	Image file
.r31	RAR compressed files from a multi-volume archive
.apn	Unknown or unassigned file extension.
.ots	OpenDocument Spreadsheet Template file
.sug	Unknown or unassigned file extension.
.wd3	Unknown or unassigned file extension.
.#$7	Unknown or unassigned file extension.
.#&&	Unknown or unassigned file extension.
.eprt	SolidWorks eDrawing part file
.big	Chinese text (old version)
.dbx	Outlook Express 5 file
.dll	Mime: application/x-msdownload
.dma	Direct Memory Access programming file

.dvr	Device Driver
.dxf	2d graphic drawing file
.flt	OpenFlight file
.flw	Freelance : Document
.max	Scene (3D Studio Max)
.mde	Microsoft Office file
.mrk	Windows 95 user benchmark
.pf	Aladdin Systems security software : Private File
.pi2	medium resolution Atari Degas Image : Bitmap graphics
.prt	P-CAD component
.wki	Lotus 1-2-3 version 2 spreadsheet
.z	Mime: application/x-compressed
.001-	Game resource file (Indiana Jones,Loom..)
.mbn	Unknown or unassigned file extension.
.#$@	Unknown or unassigned file extension.
.#$3	Unknown or unassigned file extension.
.rel	Norton Internet Security 2001 Log File
.ind	Adobe InDesign graphics document file
.blend	Blender 3D data file
.chk	EpiData check file
.a	Object library
.aac	Homeboy reference (music)
.alb	Graphics album
.au	Unix audio sound file format
.bro	Tree Professional Broadleaf Creator
.btw	Steuer2001 file
.dta	gen Datafile, can be text as well as binary data
.dwl	Textur Editor compressed file
.mus	Sound file (MusicTime/Doom)
.nsf	Lotus Notes data
.ogm	video format
.pcr	PCR Graphic Image
.pds	Adobe Photoshop
.pf	Archive
.prt	Printer formatted file (from a Print-to-file operation)
.prt	Windows directory (with .EXE files of the same root name)
.pxj	Pixtran file
.rle	Raster bitmap image. Same as .bmp filetype
.rpc	ACT! 2.0 Report
.sbf	Superbase 95 File
.t	Alchemy chemical modeller output file
.taf	Tonline Db file
.vol	Volume file (many prg)
.#gf	MetaFont font file
.003	International S-57 Hydrographic Data Electronic Navigation Chart
.elu	Unknown or unassigned file extension.
.emc	Unknown or unassigned file extension.
.hpf	High Performance FORTRAN file
.mab	Mozilla address book file
.rzr	Unknown or unassigned file extension.
.sbr	Scribes report archive file
.asp	Procomm Plus ASPect language script file
.asx	Microsoft Advanced Streaming Redirector file
.dat	SPOT image format
.dpb	Fax master file
.epf	Encapsulated Postscript Image (Image EPSF)
.fh8	FreeHand : Vector graphics
.ifo	ImageForge Pro : Graphic object layer data
.ink	CorelDraw : Pantone reference fills file
.jar	JAR archive from ARJ
.md	Compressed file archive (MDCD)
.mdl	Geometrical model file
.mdz	Ms Access Database Wizard Template
.org	Microcal Origin plot
.part	Mime: application/pro_eng
.pe	PE - Portable Executable file
.png	Browser catalogue (Paint Shop Pro)
.ppt	Mime: application/mspowerpoint
.psm	Turbo Pascal symbol table of IDE
.qds	SavedDsQuery, open with: rundll32 dsquery.dll,OpenSavedDsQuery
.sit	StuffIT Expander archive format, Macintosh
.skf	AutoSketch : Drawing file (Autodesk)
.txx	DataPerfect Text Storage
.vc6	Ms Visual C 6 (make-) file
.vcr	Arvid VCR driver
.vf	vitual terrain software
.xa	Sony Playstation audio files
.!@!	Windows backup of WIN.INI file
.xpx	XML Format File
.frm	MySQL database data file
.0#$	Unknown or unassigned file extension.
.935	Unknown or unassigned file extension.
.saved	Typicaly saved copy of any file format
.ani	Animation (Presidio - many)
.biz	BizTalk compatible schema
.dat	Mitsubishi DJ-1000 and Photorun Native Format
.dbf	dBASE III/IV
.f	Paradox file
.f90	Fortran 90 language source file
.fcd	Virtual CDROM
.iff	Graphic, Sound (Interchangeable File Format)
.jng	JPEG Network Graphic
.ldb	Data filer database (IBM Works for OS/2)
.md5	Checksum file for .SHN audio
.mdt	Microsoft Access Add-in Data
.midi	MIDI-sequention sound
.mpf	Mime: text/vnd.ms-mediapackage
.mpq	Blizzard Game Data File
.mrk	CSI MaRKup file (CAD format)
.msw	Document Microsoft Word

.o	Object file (Unix/GCC)
.pdf	Corel Ventura Publisher page (EPS-variety) file
.qt	Apple QuickTime movie clip
.r03	Norton Ghost rar file
.r??	RAR Compressed File (?? can be 01 to 99)
.rsn	Propellerhead Reason Audio File
.wbz	Webshots image format
.wks	Lotus 1-2-3 spreadsheet
.xlw	Microsoft Excel workbook / workspace
.$vm	Windows 3.x Virtual Manager temporary file
.8bc	Adobe Photoshop 5.0 Sdk Plugins file
.s	Free Pascal Assembler File for Linux or DOS Version (FPC Development Team)
.cfa	Unknown or unassigned file extension.
.ffr	Unknown or unassigned file extension.
.hcb	HyperOS Compressed Backup
.jtd	Ichitaro Document
.nks	Unknown or unassigned file extension.
.uha	Unknown or unassigned file extension.
.#$9	Unknown or unassigned file extension.
.933	Unknown or unassigned file extension.
.att	Bitmap graphics
.b	Batch list
.b3d	Image format
.dgr	Mac File Type
.doc	maybe Microsoft Word .DOT file
.dtl	Windows Applog file
.est	Webalizer.01 Lang file
.img	ADEX Corporation ChromaGraph graphics cards : Bitmap graphics : 4bit or 8bit
.ind	dBASE IV or DataPerfect Index
.isf	Inspiration Mind Mapping Software File
.itd	System Dll file
.jpg	Mime: image/pjpeg
.k	NRJ live file
.lrc	Intel Video Phone file
.mpv	Mime: video/mpeg
.pbm	UNIX Portable bitmap graphic
.pl	Interleaf printerleaf (or WorldView) format
.r08	Norton Ghost rar file
.snd	Unix sound file, similar to AU
.spg	Sprint : Glossary
.srf	TerraGen SuRFace MAP
.tad	Mime: application/octet-stream
.tiff	Mime: image/tiff
.top	IBM netfinity Rack Configurator extension
.u	Bitmap image : subsampled raw YUV file
.vbs	Visual Basic for Applications Script
.wk1	Lotus 1-2-3 version 1 spreadsheet
.wmf	Mime: image/x-wmf
.wri	Mime: application/mswrite
.gfc	Patton&Patton Flowcharting 4 flowchart file
.gsp	Mime: application/x-gsp
.cdi	DiscJuggler related file, probably image file
.000	Trend Micro Pattern File
.amb	AMB is a file extension associated with Alphacam 3D Mill, 2D Mill VB Macro
.bxa	File generated by a feline application that monitor data on a Para Scope.
.dto	Directory Toolkit output file
.hgd	Unknown or unassigned file extension.
.vgz	Unknown or unassigned file extension.
.wpl	Windows Media Player Playlist
.rel	Retrieve 4GL Dataset File
.mcl	MUSHclient World Information File
.cfk	MS Developer Studio Diagram
.mpcpl	Media Player Classic's playlist file
.psm	PrintShop Mail Data File
.avd	File
.bcf	ConfigSafe Snapshot Index
.dat	BLUEWAVE file
.dbd	DemoShield Player
.dbo	dBase IV Compiled Program File
.drf	Photoline Drawing Filter
.dt	DAT backup
.fax	Fax (generic Group 3 1bit encoded data) (most Fax programs)
.fm	Document; FrameMaker Document
.fpk	Form package file (FormFlow)
.htm	Mime: text/html
.inf	Windows setup file/ install script
.ip	IconPackager Icon Set
.jar	Mime: application/java-archive
.l	Lex language source
.ll	Preview file List&Label LLVIEW.exe (combit GmbH)
.m	Objective-C language source (gcc)
.mcd	Mime: application/vnd.vectorworks
.nfo	Netware Folio help format
.ntx	Clipper database index
.oab	MS Outlook Address Book
.org	Mime: application/vnd.lotus-organizer
.pak	Compressed file archive
.pbd	PowerBuilder : Dynamic link library
.pbf	Turtle Beach Pinnacle Bank File
.pbp	Perl Builder file
.pdb	3Com Palmpilot database file
.po	CONFIG 915E file
.psm	Protracker Studio Module (sound)
.psp	Prodea Synergy procedure
.px	Borland Paradox : Primary database index
.scn	Calgari trueSpace2 File Format
.trp	Watcom binw file
.txt	many Dos Text editors used this extension
.w00	Archive file
.y	Bitmap image (subsampled raw YUV )

.#ib	Printer data file
.#01 - #99	Scanned picture files
.ass	File
.axd	Re-Index file
.cam	Minolta CAM file
.cbs	MasterWord button bar configuration
.com	Mime: application/octet-stream
.csa	Comma Delimited textfile
.db	ANSYS Database
.doc	MS DOS Word2x,3x,.. Formatted text, mixed ascii and binary
.img	Alias Research, Vivid ray-tracer : Bitmap graphics (24bit RLE)
.ll	Preview file List&Label LLVIEW.exe (combit GmbH)
.mid	MIDI-sequention sound
.mng	Multiple-image Network Graphics bitmap image
.mpc	Ms Project Calendar file
.org	Lotus Organizer calendar
.pbp	Perl Builder file
.pla	ArchiCAD Archive
.pqi	Mime: application/cprplayer
.psm	Protracker Studio Module (sound)
.pwi	PDA file, Windows CE file format
.rg	Bitmap image (1bit B&W 4bit CMYK) (Raster Graphics format)
.rnd	PGP Random Seed
.rtf	Mime: text/rtf
.sat	ACIS 2D/3D : Vector graphics / CAD
.sbx	Adobe Illustrator Tsume
.smf	StarOffice Formula
.wb	Game: fifa2000 be file
.wd	InfoSelect data file
.wk3	Lotus 1-2-3 version 3 spreadsheet
.zl1	AAICWpro/ZoneAlarm Mailsafe renamed File = .adp
.3d	Atari Stereo CAD-3D objects graphics format
.r32	RAR compressed files from a multi-volume archive
.amv	Unknown or unassigned file extension.
.anf	ANSYS DesignModeler file format.
.f95	Fortran 95 language source file
.hp2	Unknown or unassigned file extension.
.klx	Unknown or unassigned file extension.
.otd	Unknown or unassigned file extension.
.pym	Unknown or unassigned file extension.
.rfw	Unknown or unassigned file extension.
.ulb	Unknown or unassigned file extension.
.vr8	Unknown or unassigned file extension.
.wkp	Web CEO database backup file
.xm3	Unknown or unassigned file extension.
.ytf	Unknown or unassigned file extension.
.ziz	Unknown or unassigned file extension.
.zpt	Zope page template
.#$4	Unknown or unassigned file extension.
.#$5	Unknown or unassigned file extension.
.stuff	A jokey file extension used by the authors of the game black and white II
.pod	PodFlow Project file
.csa	Documents archive
.#sc	Printer data file
.abm	Album
.ai	Mopac Internal chemical modeller output file
.bcc	Borland c++ file/makefile
.bin	Micrografx Designer 7 Project Image
.bin	Mime: application/macbinary
.bix	BIX compressed file archive
.bn	AdLib Instrument Bank file
.c4	Edmics image format
.dbd	DemoShield Player
.dbf	dBASE Act!
.dbf	Oracle 8.x Tablespace File
.dgc	TurboTax File
.dl	Display - DL Viewer : Animation
.dot	Corel Lines-Definition
.dot	Mime: application/msword
.dpp	Serif DrawPlus Drawing
.ds	TWAIN Data Source ( = DLL)
.dwg	2d Graphic
.enc	MPEG Video; video/mpeg; (MOV | Encore sound )
.f	Freeze compressed file archive
.flm	Film Roll (AutoCAD/AutoShade)
.fp5	FileMaker Pro 5 File
.i01	Winphone phonebook
.ico	Windows 3.x/95/NT Icon Resource
.ja	IBM tools updater file
.jbk	Juno Backup File
.kml	Win48 script (HP48 emulator)
.ko	IBM/tools/updater file
.m	MatLab function & commands
.mam	Database Program MS Access Macro
.mhtml	MHTML document
.mus	Music file format
.mvb	Microsoft Media Viewer document; display with MVIEWER.EXE or MVIEWER2.EXE.
.ntx	Clipper database index
.osp	CWCDATA file
.pat	AutoCAD Hatch Pattern
.pmd	AdobePagemaker file
.rsm	Resume file (WinWay Resume Writer)
.sig	gen. Current program settings = Signature
.smf	SMARTFAX : Fax
.spp	Serif PhotoPlus Native Format File
.srf	Sun Raster File : Bitmap graphics
.txt	Mime: application/text
.vce	Cool Edit NMS file, audio editor file
.zl9	AAICWpro/ZoneAlarm Mailsafe renamed File = .exe
.gho	Norton Ghostback file

.sig	gen. Current program settings = Signature
.smf	SMARTFAX : Fax
.spp	Serif PhotoPlus Native Format File
.srf	Sun Raster File : Bitmap graphics
.srv	Help Maker file
.t	Paradox database file
.vce	Cool Edit NMS file, audio editor file
.zl9	AAICWpro/ZoneAlarm Mailsafe renamed File = .exe
.gho	Norton Ghostback file
.gdb	Some database file
.004	Compressed archive file
.bgy	Unknown or unassigned file extension.
.cf1	Common File format 1
.dvn	Unknown or unassigned file extension.
.gul	Unknown or unassigned file extension.
.h3r	Unknown or unassigned file extension.
.kge	Unknown or unassigned file extension.
.l7a	Unknown or unassigned file extension.
.mvk	Unknown or unassigned file extension.
.nrl	Unknown or unassigned file extension.
.rra	Unknown or unassigned file extension.
.sxv	Unknown or unassigned file extension.
.ts_	Unknown or unassigned file extension.
.vvi	Unknown or unassigned file extension.
.w3m	Warcraft 3 Map file
.xzv	Unknown or unassigned file extension.
.zmc	Unknown or unassigned file extension.
.#$6	Unknown or unassigned file extension.
.#&-	Unknown or unassigned file extension.
.aca	Animation
.asc	Ascent is an australian CASE design tool.
.asc	Transport armored file
.asx	Video file
.cache	Snacc-1.3 vda file
.cbf	Chess Base
.cit	Intergraph Scanned Image
.cvf	SuperStor compressed volume
.dba	Turbo Prolog - DataEase : Database
.dbf	Enable database : can be opened with Excel 97
.dbf	MS Query database file
.dg	Auto-trol Vector : Vector graphics
.drw	Drawing (various)
.dst	CubicPlayer file
.ebo	Microsoft Reader Ebook Format
.edw	eDrawings SolidWorks Corp
.eps	Mime: application/postscript
.fcw	Campaign Cartographer 2 File
.icd	IronCAD 2D CAD File
.icns	Icon file
.jp2	JPEG-2000 JP2 File Format image format
.log	Mime: text/plain
.lsm	Film LOTUS
.map	Geography maps
.mcx	Mastercam X and X2 file format
.mi	Mime: application/x-mif
.mts	Mime: application/metastream
.nth	Imagemagick-5.3.2 Visualmagick jbig file
.ocx	OLE Custom Control, 32 bit (Visual Basic or C++) ActiveX control
.oft	Microsoft Outlook template
.p7b	SPC File , cryptografic certificate
.par	Digitalk PARTS : Parts application
.par	Fractint : Parameter file
.php	PhotoDeluxe PhotoParade Album
.pps	Paint Shop Pro image
.pqi	PowerQuest : Drive image file
.qpw	Quattro Pro file
.r	Fortran preprocessor Source RatFor
.r	Paradox file
.rap	Magix Musstu Rap file
.rep	REPort file made by several programs
.sis	Mime: application/vnd.symbian.install
.sit	Mime: application/x-sit
.so	Shared library file (Unix)(similar to DLL)
.sp	ZX SPECTRUM emulator source profile
.stp	ISO-10303 STEP product data
.svg	Mime: image/svg-xml
.tgq	Bullfrog Software : Movie (Dungeon Keeper 2)
.tmd	Lotus TvMap Document
.trs	Micrografx executable file
.upg	Grafik Anim file
.wb?	Quattro Pro spreadsheet (?=version)
.wmf	Mime: windows/metafile
.x	X-file animation (Direct3D) (DeepV2)
.xls	Mime: application/vnd.ms-excel
.xsr	Mime: video/x-amt-showrun
.ghs	Tarshare file
.gpi	Bitware Fax file
.inp	Interdependance description file
.r40	RAR compressed files from a multi-volume archive
.dc4	Unknown or unassigned file extension.
.eea	Encrypted E-mail Attachment
.esb	Unknown or unassigned file extension.
.fni	Unknown or unassigned file extension.
.gvp	Unknown or unassigned file extension.
.gzi	Unknown or unassigned file extension.
.hmk	Unknown or unassigned file extension.
.jg0	Unknown or unassigned file extension.
.mbb	Unknown or unassigned file extension.
.opd	Unknown or unassigned file extension.
.pqe	Unknown or unassigned file extension.

.sv$	Unknown or unassigned file extension.
.to5	Unknown or unassigned file extension.
.vsr	Unknown or unassigned file extension.
.zi-	Unknown or unassigned file extension.
.#$e	Unknown or unassigned file extension.
.#$8	Unknown or unassigned file extension.
.0#5	Unknown or unassigned file extension.
.acct	Describes the format of the records in the system accounting files.
.adp	Dynamic Page file (AOLserver)
.001-999	Database index file
.art	Image
.as	Applix Spreadsheet file
.axe	Map
.bc3	(make-)file for Bcc 3
.bin	Mime: application/mac-binary
.bin	Mime: application/octet-stream
.bkf	msbackupfile open with: ntbackup.exe
.blb	DreamWorks Resource Archive
.bmp	Mime: image/x-windows-bmp
.btr	Btrieve Database File
.c	Check Point Site Configuration
.cds	Format on a copy protected CD ????
.css	Internet HTML Cascading Style Sheet
.csv	CompuShow adjusted EGA/VGA palette
.d	ChemDraw Conn. Table chemical modeller output file
.d01	Tonline Db file
.db	data by Paradox
.db	WindowsXP Thumbnail Database
.dcr	Delphi Component Resource (binary resource)
.doc	DisplayWrite 4
.dsn	Design (Object System Designer)
.dta	Stata
.dvd	DOS Device Driver File
.eds	Ensoniq SQ80 disk image
.exo	System file
.fbc	FamilyTree Compressed Backup File
.h	Header File normally with .C or .CPP file
.ics	Outlook Calendar File
.iges	Draft for IGES 5.x
.ipt	AutoDesk Inventor Part
.ird	Ird Append file
.jtf	Hayes JT Fax : Fax
.kml	Kedit Macro Library
.m14	Steuer2001 file
.mav	MS Access View Shortcut
.mfl	WINXP SYSTEM32 WBEM file
.mht	Mime: message/rfc822
.mhtm	MHTML (mime html-)document
.mo	Modula-3 object file
.msg	MeSsaGe text
.mva	Archive; Used by MS some setup programs
.ndx	dBase Index (generally database index)
.net	gen. Network configuration/info file
.pcr	image format
.pdg	Print Shop Deluxe : Data
.psd	Mime: application/octet-stream
.pst	MS Outlook Personal Folder File
.ptb	Pro/Engineer : Table file
.ptn	Amaya dicopar file
.pub	Publication (PageMaker/Ventura Publisher/1st Publisher)
.r	Macintosh Resource similar to RC
.raw	HSI Raw image format
.rbi	Adressmn file
.sdf	System Data Format file (fixed lenght ascii text)
.slddwg	SolidWorks drawing 2D (Vector graphics)
.tps	WN16 DICT file
.txt	Mime: text/plain
.wfc	War FTP client file
.x	Lex language source code
.xml	Mime: application/xml
.!c	ZX Spectrum Hobetta picture format
.s	Train Simulator Shape File
.dt7	Unknown or unassigned file extension.
.exb	Unknown or unassigned file extension.
.fgc	Unknown or unassigned file extension.
.hmt	Unknown or unassigned file extension.
.hyn	Unknown or unassigned file extension.
.kdr	Unknown or unassigned file extension.
.mc9	Mastercam V9 file format
.pun	Unknown or unassigned file extension.
.sbg	Unknown or unassigned file extension.
.sgz	Unknown or unassigned file extension.
.vse	Unknown or unassigned file extension.
.vs4	Unknown or unassigned file extension.
.xef	Unknown or unassigned file extension.
.xmd	Unknown or unassigned file extension.
.#&$	Unknown or unassigned file extension.
.934	Unknown or unassigned file extension.
.s3d	Philips 3D Solutions 3D Displays that show 3D content
.tab	Native file format of MapInfo
.qxp	QuickCreate Pro Course Customiser
..0	Compressed harddisk data file
.acb	Compressed file archive
.am	Applix SHELF Macro
.ac3	Dolby 5.1 channel sound format file
.arv	File
.b!k	Game: Scenery file
.bin	Mime: application/x-macbinary
.bsa	BSArc compressed file archive
.bt	virual terrain software

.c v	Cvip file
.c4	Bitmap image (1bit) (JEDMICS CCITT4 format)
.car	AtHome Assistant
.cdd	Chromeleon Device Driver file
.clg	Database of Disk Catalog
.clp	Quattro Pro/PCPaint/Pictor bitmap CLiP-art
.com	Mime: text/plain
.cpy	Copy Books Data File
.cs	C#.NET Source
.cvs	Canvas bitmap image
.cwg	Palette CWK
.d00	Blaster Master Pro file
.dml	Darn! Shopping! Mall File
.doc	FrameBuilder Formatted text, mixed ascii and binary
.doc	Microsoft BIFF File
.dot	Mime: application/x-dot
.drw	Image LOTUS Freelance
.dsf	DriveSurf picture
.dvf	DV Studio Camcorder Graphics File
.eit	E-Icons Thčme (Windows)
.ex_	Compressed EXE (a one-file archive)
.ezm	Text File (mailing lists)
.fdr	SideKick 2 Note file
.flc	Corel Show
.fnd	Microsoft Explorer Saved Search file
.ies	Photometric File Data
.ima	WinImage : Graphics
.image	Disk Copy, ShrinkWrap : Disk Image
.imd	Mime: application/immedia
.in	Input file
.ivf	Indeo Video File
.jpeg	Mime: image/jpeg
.jsd	eFAX : Jet Suite document
.mat	MS Access Table Shortcut
.max	Max language source code file
.mtw	Minitab data file
.mwf	ProMotion animation
.nba	Nba game data
.niff	Bitmap image (Navy Interchange File Format)
.nrt	Nokia RingTone
.obk	OrCAD Capture Design/Library
.pdf	PCAD : Database Interchange Format
.pme	Plazmic Media Engine File
.png	Mime: image/x-png
.png	PaintShop Pro Browser
.ppi	MS PowerPoint Graphics File
.ppm	Mime: image/x-portable-pixmap
.pps	Mime: application/vnd.ms-powerpoint
.pst	Personal Folder File (Microsoft Outlook)
.ptb	Power Tab Guitar Tablature Editor
.pub	Ventura Publication
.pzp	MGI Photosuite Project image format
.rbf	Rbase datafile
.rtf	Mime: application/rtf
.scc	Source code control file; programming project file management
.scr	Windows screensaver
.sft	ChiWriter screen font
.sis	Psion software installation file
.sol	MATRA prelude solids
.spp	Sprint : Printer file
.stf	ACME Table Files (winword.exe)
.sw2	Spice : Sweep output
.tab	TAB separated file
.upf	Bitmap image (Universal Picture Format)
.utx	Unreal Texture File
.vbw	Microsoft Visual Basic workspace
.vcm	Visual Component File
.vpf	Vector Product Format
.wax	Windows Media Audio Redirector
.wpa	Word processor document (ACT!)
.wpc	Windows 95 WordPad file converter
.wpk	WordPerfect for Windows macros
.x	Alysis SuperDisk self-extracting archive
.x	XYZ chemical modeller output file
.xlr	Microsoft? Works Spreadsheet or Chart File
.xpx	Mime: application/vnd.intercon.formnet
.$#!	Aol5.0 Virchk file
.$db	dBase IV temporary
.006	Winfunktion v8 Julia fractal file
.2d	Amapi picture format
.gmp	Geomorph tile map (SPX)
.gtar	Mime: application/x-gtar
.psf	Insight II X-PLOR Molecular Structure File
.mps	Pocket Streets Map File
.orf	Descent 3 Outrage Room Format
.009	International S-57 Hydrographic Data Electronic Navigation Chart
.at5	Unknown or unassigned file extension.
.bj3	Unknown or unassigned file extension.
.dmi	Unknown or unassigned file extension.
.dng	Digital Negative
.ef_	Unknown or unassigned file extension.
.gwi	Unknown or unassigned file extension.
.isb	Unknown or unassigned file extension.
.ize	Unknown or unassigned file extension.
.kk0	Unknown or unassigned file extension.
.lzk	Database file of loizziTimeControl
.md0	Unknown or unassigned file extension.
.nbu	Unknown or unassigned file extension.
.npg	Magentic content download file
.rik	Unknown or unassigned file extension.

.ro3	Unknown or unassigned file extension.
.swm	Unknown or unassigned file extension.
.ut_	Unknown or unassigned file extension.
.vi2	Unknown or unassigned file extension.
.w05	Archive file
.zri	Unknown or unassigned file extension.
.PHPEditSolution	PHPEdit project solution file
.htr	People Putty Haptek Character
.chk	3D Movie Maker Interface Data File
.abc	Document
.acb	Graphics file
.amc	Catalog file
.apm	Windows Metafile image format
.asf	Shared file
.asf	Data file
.asp	ASP (Asociation of Shareware Profesionals) text
.b	Language source file
.c2d	File created by burning software
.cd	CD description (DN)
.cdb	CardScan Card DataBase
.cgm	Computer Graphics Meta-file bitmap
.cgm	Computer Graphics Metafile vector-image, mostly vectors but also bitmaps
.cmd	OS/2 Command language, more advanced than BAT
.cpc	Compressed image (Cartesian Perceptual Compression)
.cph	Corel PrintHouse picture (simple layout program)
.cpl	Compel presentation
.dat	Z80 Spectrum Emulator Snap/File Format
.db3	Dr Brain 3
.dbl	WindowsXP Product Activation File (if on WPA.DBL in the System32 folder)
.dcr	Shockwave - Macromedia Director : Data
.dff	Animation
.dgr	Format Pivot Graphic (FAX)
.dll	CorelDraw Export/Import Filter
.doc	WordPerfect Formatted text, mixed ascii and binary
.dsc	DeSCription file
.dst	Embroidery machines graphic file
.dtf	ICEM CAD : Data file
.fig	TransFIG image format
.flc	Presentation; Film Clip
.ftv	Forest & Trees File
.fw	FrameWork database
.hp	Printout file (HP Graphics Language )for HP printers/plotters (HP/GL)
.i00	Winphone phonebook
.iam	AutoDesk Inventor Assembly
.igs	2D or 3D CAD model : Initial Graphics Exchange Specification format
.ind	windows/applog index
.isu	Mime: video/x-isvideo
.java	Mac File Type
.jbg	Image JBIG 1-bit raster
.l	WATCOM wlink directive
.ldf	LuraDocument Format image format
.lko	Outlook Express file
.m	Common binary file name extension (Maple)
.m	Mathematica function & commands
.m2v	Mime: video/mpeg
.maq	Database Query; MS Access Query
.mmf	MS Mail Message
.model	Catia File
.mp2a	Sound file (MPEG-1 Layer II Audio Stream)
.mpega	MPEG Sound
.mts	Encore Samples file
.mtv	MTV Raytracing image format
.mui	Opengl Glut-3.6 file
.mxm	MathConnex Module
.myob	Mac File Type
.nmw	T126_Whiteboard, open with: NetMeeting wb32.exe
.nri	Nero - Burning Rom (CD-burner software) file
.o	Mime: application/octet-stream
.odf	Open Document Interchange Format (ODIF)
.opt	options, Configuration information used by several programs
.out	Extract individual sound files from the input file(sox)
.p3d	3d Graphic
.pac	Archive
.pcb	P-CAD : P-CAD database
.pcf	HP95 Printer configuration
.pcx	Mime: image/x-pcx
.pff	Scandata : Paraform file for 3D modeling
.phb	ArcSoft PhotoBase picture file
.pnm	Mime: application/x-portable-anymap
.ppf	Micrografx Picture Publisher
.pub	Mime: application/x-mspublisher
.pxj	Stomp ( click N' Burn program as a CD Mastering File) Saves the info for a list of tracks to burn a CD
.py	Python script language source code file
.r01	Norton Ghost rar file
.raw	Raw File Format (bitmap)
.rem	REMarks
.rpm	Linux Package Manager
.rpt	Microsoft Visual Basic Crystal Reports file
.rsc	Compiled ReSourCe(s)
.ru	Javasoft Jre 1.3 lib file
.rwz	MS OutlookXP Internet Settings
.scb	Scribble.Document open with: SCRIBBLE.EXE /dde
.sdf	Source Definition File (Sourcer)
.sitx	Mac File Type
.smc	SmartMaster LOTUS Freelance Graphics 9x scene file
.sng	Midisoft Studio - Prism : Song (midi sound)
.sp	Micrografx ABC Snap Graphic
.sp	Splint/unix : Compressed file archive
.stb	Genus Stub Library
.sw	16bit) data : Sound (Raw Signed PCM Word

.t	Unix Tape Archive = TAR without compression (tar)
.tap	Wave Sound, Action Wave
.tcd	TurboCAD for DOS
.tlf	Opengl Stonehenge file
.tmd	Swisslog TimeData file
.tr5	Tree Professional File
.txt	Unix format Text(lf only)
.url	Internet Shortcut
.vbk	Mime: audio/vnd.nortel.vbk
.vcf	Mime: text/x-vcard
.wfa	WinFax Pro Archive
.wlb	Wgt file
.wmf	Mime: application/x-msmetafile
.wri	Mime: application/x-mswrite
.ws	Windows Script file
.xdw	Mime: application/vnd.fujixerox.docuworks
.xtg	Quark Xpress 3.32 tags files
.z3	Infocom game module for Z-machine version 3
.#sc	LocoScript printer data file
.$$$	OS/2 operating system file type
.$ed	Ms C editor temporary file
.007	Winfunktion v8 Julia fractal file
.gm	Bitmap image (Autologic files)
.gsm	Mime: audio/x-gsm
.bwi	CD/DVD image files
.004	International S-57 Hydrographic Data Electronic Navigation Chart
.---	Temporary file
.MYI	MySQL database data file
.dm1	Unknown or unassigned file extension.
.emi	Unknown or unassigned file extension.
.f#i	Unknown or unassigned file extension.
.gdo	Unknown or unassigned file extension.
.hpd	Unknown or unassigned file extension.
.izh	Unknown or unassigned file extension.
.jlt	Unknown or unassigned file extension.
.mgv	Unknown or unassigned file extension.
.m1_	Unknown or unassigned file extension.
.nbf	Unknown or unassigned file extension.
.ngr	Unknown or unassigned file extension.
.pk2	Unknown or unassigned file extension.
.pk7	Unknown or unassigned file extension.
.pvm	Unknown or unassigned file extension.
.rmv	Unknown or unassigned file extension.
.sb2	Unknown or unassigned file extension.
.vbi	Unknown or unassigned file extension.
.wo2	Unknown or unassigned file extension.
.wz_	Unknown or unassigned file extension.
.xba	Unknown or unassigned file extension.
.yzy	Unknown or unassigned file extension.
.#$g	Unknown or unassigned file extension.
.#$m	Unknown or unassigned file extension.
.#$p	Unknown or unassigned file extension.
.#$x	Unknown or unassigned file extension.
.#$_	Unknown or unassigned file extension.
.#-8	Unknown or unassigned file extension.
.tlbackup	True Launch Bar backup settings
.ind	MapInfo index file
.htr	Motion Analysis Software Skeletal File
.abm	Music album
.ade	Audio file (ADC,TI/MIT)
.adf	ARC/INFO coverage data file
.adp	Dynamite file (Astound)
.app	Normal mode application file
.amp	Arbitrary Map Settings file
.apa	File
.app	MAC application package file
.ar	Lib file
.asd	Presentation file
.asp	Astound Presentation file
.aux	AUXiliary references
.bib	BIBliography (ASCII)
.box	Mime: application/vnd.previewsystems.box
.brw	financial institutions loan application file
.cache	CAChe MolStruct chemical modeller output file
.cct	Macromedia Director Shockwave cast
.chm	Mime: chemical/x-chemdraw
.chw	HTML Help general index, funtional comparable with .gid
.clb	Super NoteTab CLipBook template
.cmd	DOS CP/M command file
.cp	Sound shared file
.dat	Novell Message File
.db	MSWorks
.dcr	Mime: application/x-director
.dkc	Virtue Deskshow Compiler
.dl	Mime: video/x-dl
.dlv4	Catia file format
.doc	maybe RTF
.dre	DReport exported report file
.ds4	Micrografx Designer Graphics (ver 4)
.dsf	Delusion/XTracker Digital Sample
.dtp	Page Express desktop publishing document
.dtp	SecurDesk! Desktop
.dus	??
.dwg	AutoCAD Drawing Database
.e	EEL macro language(Epsilon Editor )
.email	Outlook Express Mail Message (Rename to .EML to access in OE)
.er1	ERWin data
.fil	File listing
.flt	Autodesk Animator Animation
.flt	Filter (generic)

nt	Font file (many)
.fnt	raw font created by FONTEDIT.EXE
.frf	FontMonger intermediate font
.fs	Bitmap image (Usenix FaceServer file)
.fvt	Mime: video/vnd.fvt
.hnf	Humax Receiver Settings
.hpi	Hemera Photo Image image format
.ico	Icon ICE icon viewer
.ifd	Jet Form Design Form
.igx	iGrafx flow chart and process model
.img	Image Whatnot Picture Format
.ind	Shared Database file (Specifically in Microsoft Windows)
.ism	Mime: model/vnd.gdl
.jad	Java Application Descriptor file
.jwl	Jewel Case Creator CD disc case labeler
.k	Macromodel chemical modeller output file
.kar	Mime: music/x-karaoke
.kext	Kernel extension
.lay	Plotmaker Layout
.lbl	LabeL (dBASE IV/Clipper 5/dBFast/FoxBase+)
.lit	Movie
.ltb	Amma Lsb v1.0 file
.m3d	Corel MOTION 3D Scene movie
.mcd	Mime: application/mcad
.mcd	Mime: application/vnd.mcd
.mf	FrameMaker MakerFile
.mg	Modula-3 generic module source
.mmm	MultiMedia Movie format (RIFF RMMP) (MacroMind Director 3.x)
.mny	Microsoft Money
.movie	Same as MOV
.mp3url	Mime: audio/x-mpegurl
.mpf	Mime: text/vnd-mediapackage
.mse	Bwsb120a Demo file
.mx3	encoded MP3 file format
.n64	Nintento 64? Emulation ROM Image
.nls	Character Translation; National Language Services driver (font or font map)
.nls	Mime: text/nls
.ob	IBM LinkWay Object cut/paste file
.ord	Bc45 Owl file
.p	Pascal language source code file
.pat	Pattern (bitmap used by drawing programs)/Corel Draw pattern
.pck	Package
.pdf_	Mac File Type. Adobe acrobat portable document file
.pgm	Chromeleon Batch Program
.pln	ArchiCAD Solo File
.pp	PowerPacker : Compressed Amiga file archive
.ppt	Mime: application/vnd.ms-powerpoint
.prn	generally Printer output file
.pro	Terramodel Project file
.prt	Dr.Halo printer driver
.prx	Foxpro Compiler Program
.psp	Scenicsoft Preps : Postscript prepped imposed print file
.pt	Pop!site; HTML
.pzp	Pizazz Plus Palette File
.qcp	Mime: audio/vnd.qcelp
.qic	Backup set for MS Backup
.rdf	Resource Description Framework file
.rec	ARCSERVE archivation protocol
.rom	Read Only Memory image (emulators/AONs)
.s	Scheme language source
.scn	Minolta SCeNe file
.sdc	StarOffice StarCalc Spreadsheet
.sdf	Mime: application/e-score
.seq	Stad image format
.ses	Cood Edit Session file
.caf	Generic : Sewing program file
.sf	Signature instructions file
.sid	LizardTech MrSID image files http://www.lizardtech.com
.sim	Aurora image format
.sit	Mime: application/x-stuffit
.smc	Super Nintendo Game-console ROM Image (See ZNES or SNES9x)
.snd	Amiga IFF/8SVX Sound
.sol	Mime: application/solids
.stp	PageKeeper Packed Storage File
.svg	W3C's XML based vector graphics format
.svq	Music file
.tbp	Mime: application/x-timbuktu
.tci	INMOS Transputer Development System Occam Configuration Info
.tg4	TG4 image format
.tgz	ZIP Archive; TAR Tape Archive (probably Gzip compressed); see TAR,TAZ,GZ
.tp	Turbo Profiler session-state file
.tr	TomeRaider database
.tra	Mime: application/vnd.trueapp
.trc	Debug support file (Power CTrace)
.tt	True type font file
.unv	SDRC I-DEAS file
.v22	CWCDATA file
.vcs	Mime: text/x-vCalendar
.waf	Temp file
.wbc	Mime: application/x-webshots
.wcs	Chip Mark II WCS
.wks	MS Works Document
.wpt	WordPerfect Document Template
.xdf	Extended disk format image (OS/2 xdfcopy.exe)
.xif	Xerox DIFF image format
.xls	Mime: application/x-excel
.xst	Tanner Ledit : Crossview data
.zip_	Mac File Type
.gdi	GEM Metafile Image
.gp	Gofer project (Haskell language dialect)

.ncd	File created by burning software
.mst	Windows Installer Transform
.r38	RAR compressed files from a multi-volume archive
.gpb	Backup configuration file
.3dt	Database in which the meta-data of a 3D Topicscape is held
.bxp	Unknown or unassigned file extension.
.b4u	Unknown or unassigned file extension.
.b6l	Unknown or unassigned file extension.
.cdg	Unknown or unassigned file extension.
.dzi	Unknown or unassigned file extension.
.gzr	Unknown or unassigned file extension.
.hav	Unknown or unassigned file extension.
.hs9	Unknown or unassigned file extension.
.iuf	Unknown or unassigned file extension.
.jdm	Unknown or unassigned file extension.
.jma	Unknown or unassigned file extension.
.jml	Unknown or unassigned file extension.
.kdi	Unknown or unassigned file extension.
.mb4	Unknown or unassigned file extension.
.mc8	Mastercam V8 file format
.mgb	Unknown or unassigned file extension.
.mtc	Unknown or unassigned file extension.
.pra	Unknown or unassigned file extension.
.rnr	Unknown or unassigned file extension.
.rrr	Unknown or unassigned file extension.
.sb0	Unknown or unassigned file extension.
.skv	Unknown or unassigned file extension.
.sr0	Unknown or unassigned file extension.
.ss0	Unknown or unassigned file extension.
.tce	Unknown or unassigned file extension.
.tib	Unknown or unassigned file extension.
.tus	Unknown or unassigned file extension.
.ufi	Unknown or unassigned file extension.
.wdf	Unknown or unassigned file extension.
.xkp	Unknown or unassigned file extension.
.xvo	Unknown or unassigned file extension.
.zfo	Unknown or unassigned file extension.
.zsp	Unknown or unassigned file extension.
.z36	Unknown or unassigned file extension.
.#bc	Unknown or unassigned file extension.
.#$d	Unknown or unassigned file extension.
.#$k	Unknown or unassigned file extension.
.#$v	Unknown or unassigned file extension.
.#$z	Unknown or unassigned file extension.
.3ft	Unknown or unassigned file extension.
.pages	Pages document
.smf	System Monitor Session
.agdb	ANSYS DesignSpace
.p65	Document PageMaker 6.5
.#gf	Font file
.abw	Document
.aex	Alpha linked executable file
.amf	DSMIA/Asylum module music (Crusader-No Remorse, Aladdin PC games)
.arf	ARF image format
.arm	File
.asd	Auto-save temporary document
.asm	Assembler source code file
.aux	Dictionary
.avc	Antiviral database
.avl	Video fun file
.axs	HTML; script file
.b	Base program
.bmp	Mime: image/x-bmp
.bub	Ipix Spherical panorama
.bvd	"ViGuard+net" anti Virus Prog
.bvh	Misc
.bws	Blindread/Blindwrite
.c#	Microsoft c#
.cal	CALS Raster Group 4 fax compressed bitmap
.cd1	DATAIR Cafeteria Document System Data
.chm	Ares Font Chameleon Source Font; font outline
.conf	Mime: text/plain
.crt	Commodore emulator file; image of a cartridge
.csd	Chemsoft MSDS Database File
.cvr	Bitware Fax file
.data	Font2d resources file
.dbk	dBase Database Backup
.dbs	Database; Structured Query Language (SQL)
.divx	Movie Encoded with DivX-codec
.dkd	Virtue Deskshow ScreemDemonstrato
.dpk	Delphi Package File
.drw	Micrografx Vector Graphic DEsigner 2.x 3.x
.dta	Data file for eg: TURBO PASCAL / PC-FILE
.dwx	DesignWorks Viewer Tools file
.enc	Mime: video/mpeg
.eps	Printer font (Epson/Xerox...) (Ventura Publisher)
.fbk	Navison Financials backup
.fdf	Portable Document; Adobe Acrobat Portable Document Input Form
.ffd	Softrans Gmbh Hello Engines! 2.1 file
.ffl	MS Office Fast Find
.fim	Construsyc/Instasyc File
.fle	Op9630 Settings file
.hat	Formula 1 car race 2001 Log Hat file
.hpl	Vector image (Hewlett-Packerd LaserJet)
.ht	HyperTerminal file
.htc	Mime: text/x-component
.huf	Huffman encoded/compressed file
.i	Borland C++ Preprocessor : intermediate preprocessor output file
.i	Progress Include File
.ice	Archive .LZH/.Lharc (Cracked LHA) (old Lha)

.ico	Gimp Icon
.indd	Mac File Type
.inf	General information file
.ipd	InstallPROG 6 EDBS Install Database
.ipt	InterPaint (Multicolor) image format
.iqy	Excel Web Internet Query
.j	JAR archiv , ARJ Software
.jbr	Paintshoppro Brushes file
.js	Mime: application/x-javascript
.jsm	Henter-Joyce, Inc. Jaws Script Message File
.lay	generally used for Layout file
.lck	Lock file (database access control)
.lpd	Helix Nuts and Bolts file
.lu	ThoughtWing Library Unit File
.m	Brief macro module
.m14	Mime: application/x-msmediaview
.mdl	Half-Life model/ Quake model file
.met	Windows Metafile image format
.mf	Metafont text file (TeX)
.mi	MM2 Input chemical modeller output file
.mic	Microsoft Image Composer data
.min	gen. minimum file
.mix	Ms Windows sound MIX
.mms	Jpeg jpeg-6b file
.mob	Device definition (PEN Windows)
.mp	MultiPlan
.mrl	4bit CMYK Mimaki MRL-1 file for plotter : Bitmap graphics
.ms	Formatted manual page with ms macros
.msif	Mac File Type
.mvi	Movie command file (AutoCAD AutoFlix)
.mvp	MediaView Project
.mxd	ArcInfo Map file
.ndf	NimbleGen Design File
.nms	Numega Softice's Loader File (includes debugging info)
.nws	Mime: message/rfc822
.o2c	AMglossar images file
.oda	Used with OCX
.ofd	ObjectView Form Definition
.opx	Banner Blue Org Chart
.ov2	Overlay file (part of program to be loaded when needed)
.p3	Primavera : Project Planner file
.pat	ArcView : geocoding pattern recognition file
.pbd	AXIALIS image (.PBI)
.pcx_	Mac File Type
.pd	Paradox table
.pda	Mime: image/x-pda
.pdb	Palmpilot Database/Document File
.pdl	Print Shop Deluxe flyer
.pes	WordPerfect Program Editor Work Space File
.pgs	man4dos : Manual page
.php	Presentation
.pnm	Mime: image/x-portable-anymap
.prc	3com Palm : Resource (text or program) file
.prf	PICS Rules File
.qcp	Qualcomm QCELP recoder and player voice file
.raw	PCM Signed Raw Sound File
.rax	Image File
.reg	Registration information/key for W95/98...
.rep	Mime: application/vnd.businessobjects
.rpf	AutoCAD pattern
.rtf	Mime: text/richtext
.rv	RealVideo video
.s3	Motorola S-record format
.s3d	Micrografx Simply 3D Project
.saf	Spatial Archive Interchange Format
.sbd	Storyboard Editor data file
.sc	SciTex Continuous Tone image format
.scn	Visual Basic
.sdb	SideKick 2 Database
.sfw	Seattle Film Works graphics
.shd	W95 spool file
.shw	Corel Show | Corel Presentations Show
.sjf	Split Files Shell Extension
.skd	Autosketch file (Autodesk)
.skp	Mime: application/x-koan
.slg	Chromeleon Audit Trail
.spr	many - Story Board : Sprite (graphics image)
.src	DataFlex/Multi-Edit souce
.srg	Microsoft PowerPoint : Self-registration data file
.sta	Spinmaker Plus : Stack
.step	Mime: application/step
.stx	Terrasoft SAS data file
.t	Mime: application/x-troff
.t??	Ingres Table/Index File (?? = Hex 00 to FF)
.th	Javasoft Jre 1.3,lib file
.thb	Clipart; Hijack Thumbnail
.tiff	Mac File Type
.ttf	Mime: application/octet-stream
.vba	VBase file
.vbd	Visual Basic 5 Active Document (Internet/Intranet document)
.vip	Mumath 30 Vip file
.vm	Geoworks Virtual Memory file (or localization file)
.vst	Visio Flowchart
.war	Archived Konqeror (KDE) HTML Page
.wb1	Mime: application/x-qpro
.wb1	Upload file (Argo WebLoad II)
.wbp	Webshots image format
.wpg	WordPerfect bitmap or vector image, max. 256 colors
.wss	Windows Sound System
.wsx	Audio Utility Sysex Wsysex file

.wsz	Winamp Skin Zip
.wtmp	Mac File Type
.wxp	document EXP for Windows
.x32	Macromedia Extra document (32 -bit program extension)
.xml	Mime: text/xml
.z5	Infocom game module for Z-machine version 5
.zhp	Zipped SwiftView File
..poz	Mac File Type
.001-999	Database index files by Superbase
.1-step	Backup file (Iomega Backup)
.8be	Plug-in filter for Adobe-compatible paint program
.g4	Access image format
.gdb	Mime: x-lml/x-gdb
.gl	Animation (GRASP - GRAphical System for Presentation format)
.gpk	Compressed Omnigo file archive (Geos package)
.grd	Grid file
.gzip	Mime: application/x-gzip
..0	Inno Setup Binary File
.005	Compressed archive file
.010	Compressed archive file
.r35	RAR compressed files from a multi-volume archive
.bfs	Unknown or unassigned file extension.
.bpa	Unknown or unassigned file extension.
.bp1	Unknown or unassigned file extension.
.cah	Unknown or unassigned file extension.
.dal	Unknown or unassigned file extension.
.dhw	Unknown or unassigned file extension.
.es3	Unknown or unassigned file extension.
.fnm	Unknown or unassigned file extension.
.fvl	Unknown or unassigned file extension.
.gl2	Unknown or unassigned file extension.
.hcp	Unknown or unassigned file extension.
.jia	Unknown or unassigned file extension.
.ksd	Unknown or unassigned file extension.
.lgv	Unknown or unassigned file extension.
.ma4	Unknown or unassigned file extension.
.nrj	Unknown or unassigned file extension.
.nzb	Unknown or unassigned file extension.
.omp	Unknown or unassigned file extension.
.oxe	Unknown or unassigned file extension.
.qmx	Unknown or unassigned file extension.
.qqe	Unknown or unassigned file extension.
.rbb	Unknown or unassigned file extension.
.re3	Unknown or unassigned file extension.
.rgo	Unknown or unassigned file extension.
.ro#	Unknown or unassigned file extension.
.ro1	Unknown or unassigned file extension.
.r0#	Unknown or unassigned file extension.
.sgs	Unknown or unassigned file extension.
.ts-	Unknown or unassigned file extension.
.unc	Unknown or unassigned file extension.
.vf3	Unknown or unassigned file extension.
.vnt	Unknown or unassigned file extension.
.w4a	Unknown or unassigned file extension.
.xpv	Unknown or unassigned file extension.
.zdl	Unknown or unassigned file extension.
.zib	Unknown or unassigned file extension.
.zvr	Unknown or unassigned file extension.
.#$c	Unknown or unassigned file extension.
.#$h	Unknown or unassigned file extension.
.#$i	Unknown or unassigned file extension.
.#$r	Unknown or unassigned file extension.
.#$s	Unknown or unassigned file extension.
.#&#	Unknown or unassigned file extension.
.#&2	Unknown or unassigned file extension.
.~sb	Unknown or unassigned file extension.
.ppv	Punch CAD Program Thumbnail
.chk	Sophos Intercheck File
.psm	SolidEdge document format
.#st	Standard mode printer definitions
.$01	Pipe file (DOS)
.a	Ada language source code file
.a	Assembly source code
.aft	Template
.aps	Binary version of Resource
.aaf	Advanced Authoring Format multimedia
.acc	MS Image Composer.acc
.art	Image format
.ast	Multimedia file
.avb	AVB is the file extension for the Inoculan Anti-Virus virus infected file.
.avr	Sound file
.aw	File
.axi	Clipart; Axiom Composite File Management System (MetaToolsFile Kai's Power Goo Picture Library)
.bbk	Backup file
.bld	old Microsoft Developer Studio MAK
.boo	Image file
.bqy	BrioQuery file
.brd	Eagle layout file
.c3	Povwin Pov-ray for Windows v3.1 scenes advanced newltpot file
.cal	SuperCalc spreadsheet
.cca	CC: MAil Data
.cd2	DATAIR Cafeteria Document System Custom Text
.cdb	Main database (Turbo C Utilities)
.cdc	Chromeleon Driver Configuration Plugin file
.cdp	CD Architect Project
.cgd	Cricket Graph Data
.cht	Harvard Graphics Graphwriter II/SoftCraft Presenter CHarT/image
.class	Java bytecode (compiled class - application)
.cmd	1st Reader external CoMmanD menu
.cpt	song pattern file written by Casio digital pianos. Skeleton of a song, to provide accompaniment while the user plays the melody.

cpt	CA-Cricket Presents Template
.cpt	Mime: application/x-cpt
.cry	Crypto Chat II Encrypted Notebook-content
.csc	Wizard
.cst	Mime: application/vnd.commonspace
.ct	graphic file associated with the Paint Shop Pro Graphic Editor
.cvp	WinFax cover page
.daf	Mobius : Document archive
.dat	Terrasoft dataset definition file
.data	Mac File Type
.db	ArcView : Object Database File (also ODB)
.db	Borderland's Paradox 7 table database
.dba	PalmTM Desktop 3.0 organisator for Windows
.dbb	ANSYS Database Backup
.dbd	Psion file
.dbs	ProDas - SQL Windows : Datafile
.dbx	DATABEAM bitmap image
.dcl	DumpSec
.ddd	Adobe Acrobat Distiller
.der	Internet security certificate
.dfx	AutoCAD 3d/CAD graphics
.dl	Animation (Italian origin)
.dl	Image Format (MAC)
.dlm	FileMaker Pro : Data
.dm2	Misc
.doc	Mime: application/msword
.doc	Wang IWP Formatted text, mixed ascii and binary
.dpg	Mime: application/vnd.dpgraph
.ds	chemistry Software
.dsf	MS Belief Network document (infix formula declarations)
.ebk	Mime: application/x-expandedbook
.ec	Preprocessed GOC source code file (error-checking version) (Geoworks)
.edf	Drumbeat (Internet application) component
.efc	Effect
.egg	Game: wer wird millionaer Data Screens file
.elf	Black Belt Systems Extended Layer File
.ems	PC Tools Enhanced Menu System Config
.epl	Tallyman E-commerce Software
.evt	EVenT descriptions/log
.exa	Lsys file
.exp	QuickBooks
.eye	Renderize Project
.fh	Mime: image/x-freehand
.fi	Bitstream Intellifont
.fl	Sound (Floating format) (not portable)
.flt	DLL, Import Filter (Aldus/Micrografx Picture Publisher/Ms Word)
.fly	Mime: text/vnd.fly
.fm	FileMaker Pro database
.fpt	Database Text; FoxPro Database Memo
.frm	Frame Stacks
.fsg	"IBM Voice Type" languages map file
.fss	Micrografx Picture Publisher 8 register file
.ftl	FutureTense Texture (Internet texture viewer)
.ftw	Family File
.fvi	Mime: video/isivideo
.fxr	WinFax
.hdp	Magix Musstu file
.hed	HighEdit document
.hm	Windows Help context IDs used by MAKEHM.EXE
.i	Phase Vocorder : Analysis data
.icd	Mime: application/vnd.commerce-battelle
.icl	icon library ImageForge
.idx	Index file, used by many applications
.iff	Amiga IFF/8SVX Interchange File Format : Sound
.im_	Midiprg Improve compressed file
.img	Erdas Imagine MIS Picture Format
.imi	Turbo Pascal Dos file
.ipf	Microsoft SMS Installer Script (with System Management Server 2.0)
.ipx	Ipix Spherical panorama
.job	QuestVision : Vector graphics img file
.jpeg	Mime: image/pjpeg
.jsd	Henter-Joyce, Inc. Jaws Script Documentation File
.jwl	JustWrite Library
.kpl	Kazaa ?????
.ldf	Data filer form (IBM Works for OS/2)
.lib	Library file (several programming languages)
.map	Mime: application/x-navimap
.maw	MS Access Data Access Page
.mcl	MultiEdit macro library
.md3	Quake III model
.mdl	Digital Tracker music module (MOD) file
.mim	MIME encoded file
.mk	MaKefile
.mml	FrameMaker
.mpg	Saltlake city game Movies file
.mpj	Med profile_skeleton file
.mrs	WordPerfect Macro ReSource
.ms-tnef	Microsofts attachment format for applications
.msf	Mime: application/vnd.epson.msf
.msg	FoxDoc message (FoxPro)
.msh	Mime: model/mesh
.msp	Windows Installer Patch
.mtf	Mathe vektor Mtf file
.mts	Mime: model/vnd.mts
.mus	Mime: application/vnd.musician
.ncd	CoverDesigner image format
.ndb	Mime: x-lml/x-ndb
.nlm	Nokia animations screen
.npf	NTI Backup
.nra	Nero Audio-CD Compilation

.obj	Intel Relocatable OBJect Module = compiler/assembler output
.oca	Visual Basic control typelib cache
.ofc	Open Financial Connectivity File
.opx	Microsoft Office Organization Chart
.ota	Mime: image/x-ota-bitmap
.otx	Olivetti Olitext Plus text
.p65	Pagemaker 6.5 File
.pak	Quake WAD file
.pbo	Microsoft Source Profiler : Profiler Binary Output
.pcd	Images CD Creator Corel Adaptec
.pck	Turbo Pascal : Pickfile
.pdb	Pegasus DataBase
.pdb	PowerBuilder Dynamic link library
.pdb	Program Database VisC++ 32-bit LINK program information
.pdf	ED-SCAN 24bit format : Graphics file
.pfc	PF Component
.pk	CoolEdit96 Graphical Waveform /tbv
.pl1	3D Home Architect : Room plan
.plm	DisorderTracker2 : Module Statix
.pln	WordPerfect Spreadsheet File
.plt	AutoCAD HPGL Vector Graphic Plotter File
.ppd	PageMaker : PostScript printer description file
.ppp	Document or finished project (Parson Power Publisher)
.ppv	Microsoft Pocket Powerpoint Presentation for Windows CE
.prd	Microsoft Dos Word Printer Driver
.prm	Parameter file (Generic)
.prt	Mime: application/pro_eng
.psz	Creaf Awedip Doc file
.pt	Kodak Precition Color Management System
.pvd	Instalit : Script
.pvg	Ms Encarta World Atlas Pushpins
.pwa	Password Agent File
.pwd	Microsoft Pocket Word for Windows CE docu
.pwz	Microsoft Powerpoint : Wizard
.pxl	Microsoft Pocket Excel : Spreadsheet
.pxt	Nte2000 file
.qsd	Quicken 2002 file
.r	Pegasus Mail resource
.raw	RAW grayscale/24-bit RGB bitmap image
.rec	EpiInfo datafile
.rep	Qwk reader REPly file
.rkv	RKIVE compressed file archive
.rnd	Mime: application/prs.nprend
.rob	Dllbackup microsoft artgalary file
.rsb	Red Storm Bitmap.
.rsp	Linker response file (generic)
.rss	Resource source file (EPOC)
.sar	SAR compressed file archive
.sbm	Image .LBM
.sch	Scheme (P CAD/Orcad)
.sdf	MDL Isis SDF chemical modeller input file
.se1	Synthedit file
.sfb	HP soft font
.sfd	SoundStage : Sound File Data
.shx	ESRI shapefile (points)
.sif	Vector data (ISIF format)
.sip	Scoptrax file
.skp	Mime: application/vnd.koan
.smd	Video game console ROM emulator file
.snp	CoffeeCup HTML Editor Snippet
.so3	MP3 compressed .sou file =sound
.ssf	Sound set file
.sta	Reflection 4.0 saved state
.suit	Mac File Type
.sv	Game: roland garros tennis file
.swe	Nhl Ice Hockey 2002 required file
.sys	System file - device driver or hardware configuration info (DOS)
.tbl	Dynamic link library
.tgw	TerraGen World
.tif	Mime: image/x-tiff
.tiff	Mime: image/x-tiff
.tmb	Tmx editor user file
.tsc	Win Help related file
.ttl	Tera Term Macro File
.twf	TabWorks data
.tz	TAR.Z compressed file archive (TAR and Compress)
.unv	Mime: application/i-deas
.upd	UPDate info
.usa	Microsoft Office Headers file
.usr	User database (Procomm Plus/Turbo C++ tour)
.utf	AOL Updating Files (in "Tools on Demand" folder)
.v06	Xwave file
.v64	Nintento 64 Emulation ROM Image
.vbe	Visual Basic script
.vcf	Vevi Configuration File
.visio4	Visio-file
.vlt	Darn! Passwords! Vault File
.vm	Virtual Memory (Swap File)
.wap	Wap application project (Ericsson WapIDE)
.wbc	Webshots image format
.web	Corel Xara web document
.wi	Mime: image/wavelet
.wk	xaa file
.wk!	Lotus Spreadsheet File
.wm3	Working Model 3D Document
.wmk	Oc2.316s cakit file
.wq!	Compressed Quatro Pro spreadsheet
.wri	Mime: application/x-wri
.wrl	VRML Worlds (Virtual Reality Modelling Language) (Cosmo Player)
.xcf	Gimp Bitmap image format

.xlb	Ms ExceL Spreadsheet
.xls	Mime: application/x-msexcel
.xls_	Mac File Type
.xsd	XML schema description file
.z?	See ZL below
.zif	Xsys doc file
..0	Javasoft JRE 1.3 lib file
.g	Gaussian Z-matrix chemical modeller output file
.gba	GrabIt Batch Files
.gsm	sound file
.gpx	BASIS File
..0	Intel WebOutfitter Service Verification Utility
.009	Compressed archive file
.r05	RAR compressed files from a multi-volume archive
.r11	RAR compressed files from a multi-volume archive
.r36	RAR compressed files from a multi-volume archive
.r37	RAR compressed files from a multi-volume archive
.r44	RAR compressed files from a multi-volume archive
.ajp	Unknown or unassigned file extension.
.chc	Unknown or unassigned file extension.
.dvl	Unknown or unassigned file extension.
.ebc	Unknown or unassigned file extension.
.epp	Unknown or unassigned file extension.
.e_1	Unknown or unassigned file extension.
.fbf	Unknown or unassigned file extension.
.fg3	Unknown or unassigned file extension.
.fsb	Unknown or unassigned file extension.
.f3k	Unknown or unassigned file extension.
.hvc	Unknown or unassigned file extension.
.ilx	Unknown or unassigned file extension.
.isz	Unknown or unassigned file extension.
.izp	Unknown or unassigned file extension.
.lrd	Unknown or unassigned file extension.
.mrt	Unknown or unassigned file extension.
.m2t	Unknown or unassigned file extension.
.nbi	Unknown or unassigned file extension.
.nf1	Unknown or unassigned file extension.
.nhn	Unknown or unassigned file extension.
.nmv	Unknown or unassigned file extension.
.nvs	Unknown or unassigned file extension.
.one	Unknown or unassigned file extension.
.osx	Unknown or unassigned file extension.
.qct	Unknown or unassigned file extension.
.qit	Unknown or unassigned file extension.
.qp2	Unknown or unassigned file extension.
.ro0	Unknown or unassigned file extension.
.ro5	Unknown or unassigned file extension.
.ro8	Unknown or unassigned file extension.
.tx3	Unknown or unassigned file extension.
.uas	Unknown or unassigned file extension.
.vls	Unknown or unassigned file extension.
.vro	Unknown or unassigned file extension.
.vtc	Unknown or unassigned file extension.
.v2i	Unknown or unassigned file extension.
.wbb	Unknown or unassigned file extension.
.wb4	Unknown or unassigned file extension.
.wcr	Unknown or unassigned file extension.
.whb	Unknown or unassigned file extension.
.w01	Archive file
.xwb	Unknown or unassigned file extension.
.ygf	Unknown or unassigned file extension.
.zir	Compass and Ruler Figure
.ziw	Unknown or unassigned file extension.
.#$b	Unknown or unassigned file extension.
.#$j	Unknown or unassigned file extension.
.~~_	Unknown or unassigned file extension.
.5br	Unknown or unassigned file extension.
.mcl	MCell Cellular Automaton file
.speex	A Free Codec For Free Speech
.clg	photo collage
.1	Unformatted manual page (Roff/nroff/troff/groff)
.aaf	Data file
.abc	General filename extension
.abk	Automatic backup
.aca	Project file
.acm	Audio Compression Module add-on
.acr	Bitmap graphics
.act	Actor file
.adf	Amiga Disk File
.aep	Project file
.afp	Shape palette
.afw	Workspace
.aif	Setup information
.aos	Installable program
.app	Symphony Add-in Application
.arc	Compressed file archive (ARC - PKARC - QUARK - SQUASH)
.ark	ARC File Archiver CPM/Port archive
.app	Generated application or active document
.abi	Aol6 organizer file
.ani	Atari image format
.arc	File
.ark	Archive
.art	Image
.atf	Photoshop Transfer Function
.awf	Data sfx file from game
.aws	Document; Fax signature
.aws	Data file
.bar	dBASE Application Generator horizontal bar menu object file
.bif	Binary Information File (ASCII file describing image)
.bif	byLight image format

.bk!	WordPerfect for Win document backup
.bmc	"IBM Voice Type" languages Newuser file
.bmf	Corel Gallery file
.bmf	View3ds scene description
.bnk	Simcity game data
.bof	"IBM Voice Type" languages tasks enroll file
.bsp	Half-life/TFC/CS Map
.bw	Silicon Graphics image
.c!_	Audio Utility Midimach compressed file
.c00	Ventura Publisher print file
.cb	Microsoft clean boot file
.cc	C++ language source code file (gcc)
.ccp	Clonecd Profiles file
.cdb	Clipboard
.cdfs	Compact Disk filing system (WindRiver)
.cdx	FoxPro Compound index (database container)
.cem	Computer Graphics Meta-file
.cf	Imake ConFiguration
.cfm	ColdFusion template
.cfs	Inmos configuration file
.chi	ChiWriter document
.cin	Kodak Cineon image format
.cmd	REXX batch file (OS/2)
.cmp	JPEG bitmap image (Lead CMP compression)
.cmp	Open Access File
.cpp	Mime: text/x-c
.cps	Color PostScript
.cpt	Compact Pro archive format (Macintosh)
.crd	Mime: application/x-mscardfile
.ct	IRIS CT image format
.cvp	Portrait image format
.d00	Edlib Tracker mod compressed
.da!	Dinfo Data file
.db	Configuration (dBASE IV - dBFast)
.dbb	DeBabelizer : BatchList
.dbc	MS Visual Foxpro Database Container
.dd	Compressed Archive File Macintosh : DISKDOUBLER
.deb	Debian Linux Package
.df	Data File
.dic	Custom dictionary
.dl	Mime: video/dl
.dm2	Quake II recorded game format
.dna	Mime: application/vnd.dna
.doc	Volkswriter Formatted text, mixed ascii and binary
.dp	Text
.drp	DReport report file
.dsc	Nikon Coolpix Disk Identification File
.dsk	Desk
.dsn	Orcad Schematic Capture Schematic File
.dtp	Text Document of Timeworks Publisher 3.x
.dw2	DesignCAD Drawing File
.dwb	Coryphaeus Software Designer : Workbench
.dwf	Autodesk WHIP! Drawing Web File compressed image
.dwt	Macromedia Dreamweaver Template File
.ed	Tmx Editor file
.edp	Attachmate Extra! Session
.emx	Msdos Extender file
.enc	Encoded file - UUENCODEd file (Lotus 1-2-3 - uuencode)
.etl	Active Media Eclipse Transition Listing
.exd	VBE tmp file
.fig	Data (REND386/AVRIL)
.fle	Scanner Settings file
.fmp	Filemaker Pro Database
.fon	Phonebook (Terminate/Terminator/Telix)
.fp3	Filemaker Pro 3.0 database
.fpc	FoxPro catalog file
.fpx	Mime: image/vnd.fpx
.fr	QEDIT file
.frm	Visual Basic source file belonging to a Form
.fth	FileMaker Pro Theme
.fts	Graphics and data (Flexible Image Transport System)
.fwf	Xwave Fwf file
.fxm	Deltrina Winfax PRO (Multiple fax images)
.h0	Magix Musstu file
.hpr	RoboHelp Configuration
.hrf	CADCore bitmap image (Hitachi Raster Format)
.hs	Literate Haskell source code file
.htc	HTML code
.htt	Mime: text/webviewhtml
.ica	Citrix file
.ics	Inovate 3D CAD File
.icx	More Than Words file
.iges	Initial 2D/3D Graphics Exchange Specification ( many prgs, Autocad and sim..)
.ilb	Scream Tracker : Data
.ima	Mime: application/x-ima
.ima	Zenographics image
.imf	ImageForge Image EXE Library saved filtered brushes
.indd	(MAC CREATOR CODE) Indesign's Document (also *.indd) (PC ext: IND)
.inf	"AUTORUN.INF", auto-start CD-ROM
.inv	Windows Update file
.isu	InstallShield Uninstall Script Uninst.exe
.ivx	Beyond 20/20 : Microdata directory
.iwp	Wang : Text document
.ix	Framemaker Index File
.jar	Mime: application/x-java-archive
.jed	JEDEC programming specification
.jgd	Paint Shop Pro Gradients file
.jla	BMP image (VisualPro)
.jnb	Sigma Plot 5 : Workbook file
.jp2_	Mac File Type

.jps	Mime: image/x-jps
.jse	JScript Encoded Script File
.jsp	A HTML page containing a reference to a Java servlet
.kep	Turbo Pascal Dos Tp19 compressed Kepler file
.ldf	Geoworks Library Definition File
.lex	Lexicon (dictionary) . Different formats used by diff. programs
.llb	National Instruments LabVIEW vi library
.lng	Language definition file
.lpk	License Package
.lsc	Tune Smithy List of Muscial Scales
.lut	Osiris Prefs Colordir file
.lwfn	(MAC CREATOR CODE) Adobe's Type 1 Font
.mac	MS Access shortcut
.map	Atlas MapMaker geographical map
.map	Card document of Route 66
.mar	MS Access Report Shortcut
.mat	MATlab sound
.mb	Binary file (bitmaps etc.) (Mathematica)
.mb	Mime: application/mathematica
.mbx	MailBoX, used by many mail clients like Eudora or Outlook Express
.mcs	MathCAD image
.mdl	Half-Life Model image format
.mdl	Object design model (Rational Rose 98)
.mdl	Spreadsheet: CA-Compete!
.men	Menu
.mgc	MGCSoft Equation Editor File
.mhtml	Same as MHT
.mime	Message in MIME format (RFC822)
.mmo	Document; RapidFile memo
.mmp	makmake makefile project (EPOC)
.mng	MNG Animation
.mo	MM2 Ouput chemical modeller output file
.mof	Microsoft Msinfo file
.mos	System Dos62 file
.mpt	MS Project Template File
.mrg	often merge(text/word etc..)
.msc	Ms C makefile
.msif	Mac File Type
.mst	Visual Test Source File
.mv	Mime: video/x-sgi-movie
.mw	MacWrite II text document
.n	cygwin man file
.nif	Mime: application/x-nif
.nsf	Mime: application/vnd.lotus-notes
.ntp	Mediaface Design Software Image Library v1.2
.null	NULL image
.op2	Musplay 1.72 file
.orc	MIDI File
.ovl	OVerLay (part of program to be loaded when needed), program code for DOS
.ovm	Bhv Tonstudio Platin file
.p	Mime: text/x-pascal
.p7m	Mime: application/pkcs7-mime
.pac	Sound Blaster Studio II : Package file
.pae	Projet Personal AVI Editor
.par	Spartpar definition
.par	Windows 3.x swap file: 386SPART.PAR, SPART.PAR
.pat	Patch file (Advanced Gravis Ultrasound/Forte Technologies)
.pcs	Pfaff Creative Designer for Windows
.pda	Image Print Shop Deluxe
.pdi	MS Powerpoint IMPORT/EXPORT File
.pds	hardware assembly : Pldasm language source code file
.pds	Portable Data Specification image data image format
.pe4	Ulead PhotoImpact : Image archive file
.pfc	AOL : Personal Filing Cabinet
.pfm	Printer Font Metrics (Microsoft)
.pfs	First Publisher ART file
.pfs	text file (PFS:Write)
.pgm	Mime: image/x-portable-graymap
.pk	Text
.pld	PLD2 Source File
.pm	Perl Script Module
.pm5	PageMaker 5 Document
.pos	Poster
.ppp	Enfocus Preflight Profile
.ppt	Mime: application/x-mspowerpoint
.prt	Ms Schedule+ PrinT
.prv	ClarisWorks file
.prz	Mime: application/vnd.lotus-freelance
.psa	GNU PSA.OUT : Archive (Pretty Simple Archive)
.ptt	Context4 dos word processor Print file
.ptx	Pop!site
.ptx	Printronix graphics file : Bitmap graphics
.pxw	Pixtran
.py	Mime: text/x-script.phyton
.q1	Winamp file
.qbl	Business Lawyer Document
.r02	Norton Ghost rar file
.r15	Norton Ghost rar file
.ra	Remote Access data file
.raw	RAW sound file
.raw	RealAudio sound; see RA
.rec	Windows Macrorecorder macro
.rep	AAICWpro autoresponder file
.rft	Document; IBM DisplayWrite RFT-DCA
.rgs	Script for Windows Registry
.ris	Hdf Zlib file
.rld	Norton Commander 5.0 temporary file
.run	PC Tools for Win batch file
.rus	Russian text
.s	Assembler source code Unix

.scd	Matrix/Imapro SCoDL film recorder (SCODL = Scan Conversion Object Description Language)
.sce	SoftCuisine Data Exchange File
.scf	Windows Explorer Shell Command File
.scs	ScreenCam Script; Lotus
.sct	Mime: text/scriptlet
.scv	Winphone connection file
.sea	self-expanding archive
.seg	Compressed File Segment
.seu	Serials 2000 Encrypted S2K Update
.sff	Scene File Format
.sfo	Bitstream font file - fontware format
.sh	SHell script (Unix sh or bash) (ASCII)
.sh	Unix ASCII file archive created by SHAR (use unshar)
.skcard	Same as SKC
.slf	Ntgraph Setup30 file
.smi	RealPlay SMIL File Real Player G2
.soa	Sage MAS 90 Accounting Software File
.sol	Solution file ,Solution eg. game walkthroughs(Common used with game examples,tutorials)
.sparc	Sunos4 file
.spf	2d Graphic
.spr	Mime: application/x-sprite
.src	generally Source code file
.ssf	Enable : Spreadsheet file
.std	SureThing CD Labeler Document
.step	ISO-10303 STEP product data
.stg	PageKeeper Storage File
.stk	Personal Stock Monitor File
.str	Mime: audio/x-str
.sup	Bitmap image (Startup screen)
.swb	Photoshop file
.swl	Macromedia Flash Format [Alternate]
.tab	Microsoft Map table
.tax	Turbotax File
.tbb	MS Windows Office Toolbar Button
.tbd	Microsoft Mse file
.tbf	Fax (Imavox TurboFax)
.tbl	TaBLe, used by several programs
.tcw	TurboCAD for Windows drawing
.tdb	TACT database
.tdf	Speedo Typeface Definition File
.tds	Borland Turbo Debugger Symbol table
.tfx	Traffix Traffic Analysis Software
.tjs	Sound
.tr3	Spice : transient analysis output
.tsr	Swisslog TranStats Report
.tsv	Tab Separated Values
.txm	Steuer2001 Daten file
.ufo	Ulead File for Objects (Ulead PhotoImpact)
.upl	Starmoney Agent Download file
.usb	Syssoft Sandra file
.vbs	MPEG Movie Clip
.vca	Visual Clip Art
.vcf	WorldToolKit objects
.vdb	Trend Pc-cillin 2000 file
.vfd	Drive Image5 Vfd file
.vod	Video On Demand
.vsu	Visio custom user interface file
.vts	Mime: workbook/formulaone
.wcl	wcl2 file
.wks	Xlisp WorKSpace
.wmx	Windows Media Redirector
.wpr	WMS project file
.wrl	Live3D Plug-in for Netscape 3D live picture; see WRZ
.wxl	Mime: application/x-wxl
.x	Stardent AVS X bitmap image (24bit)
.x	X1 archive
.xaf	Active VRML
.xlb	Mime: application/vnd.ms-excel
.xmp	Spice Pspice Lib file
.xt	FastTracker music track
.y	Grammar file (Unix Yacc)
.#24	LocoScript printer file (24 pin)
..obj	Mac File Type
..obx	Mac File Type
.gp1	Street Atlas GPS Log
.128	Omnipage Ocr file
.3b	Data Flex 2.3b (.DAT)
.555	Sierra graphic uncompressed semi interlace
.prx	Windows Media profile
.tsk	Windows system32 file
.gdf	GEOS Dictionary File
.gg	Koala Paint Compressed image format
.gig	Gigasampler file
.gl	GALink script
.gp4	GTX Group IV format /CALS picture
.grf	Graph file (Graph Plus/Charisma)
.gsd	Professional Draw vector image
.gpx	GraphX Document - FLexSoft
.r07	RAR compressed files from a multi-volume archive
.xpx	Mime: application/x-vnd.ls-xpix
.gpc	GenieBackup Manager plugin file
.gpc	Exported data file format
.myd	Database diagram file
.avb	Avid binary image file
.tpc	3D TopicScape exported topic link file format
.anb	Unknown or unassigned file extension.
.bf_	Unknown or unassigned file extension.
.bgz	Unknown or unassigned file extension.
.bp_	Unknown or unassigned file extension.
.cgz	Unknown or unassigned file extension.

cib	Unknown or unassigned file extension.
.c1p	Unknown or unassigned file extension.
.dnx	Unknown or unassigned file extension.
.dse	Unknown or unassigned file extension.
.dv4	Unknown or unassigned file extension.
.dxt	Unknown or unassigned file extension.
.d#a	Unknown or unassigned file extension.
.d-a	Unknown or unassigned file extension.
.ekb	Unknown or unassigned file extension.
.elb	Unknown or unassigned file extension.
.enp	Unknown or unassigned file extension.
.evo	Unknown or unassigned file extension.
.fca	Unknown or unassigned file extension.
.fna	Unknown or unassigned file extension.
.fxb	Unknown or unassigned file extension.
.gec	Unknown or unassigned file extension.
.gpj	Unknown or unassigned file extension.
.g-9	Unknown or unassigned file extension.
.hcg	Unknown or unassigned file extension.
.hsa	Unknown or unassigned file extension.
.irk	Unknown or unassigned file extension.
.jfk	Unknown or unassigned file extension.
.kam	Unknown or unassigned file extension.
.klm	Unknown or unassigned file extension.
.kob	Unknown or unassigned file extension.
.krm	Unknown or unassigned file extension.
.ktn	Unknown or unassigned file extension.
.k3f	Unknown or unassigned file extension.
.ldt	Unknown or unassigned file extension.
.ldw	Unknown or unassigned file extension.
.lxf	Unknown or unassigned file extension.
.lzt	Unknown or unassigned file extension.
.msu	Unknown or unassigned file extension.
.mtd	Unknown or unassigned file extension.
.mvl	Unknown or unassigned file extension.
.naz	Unknown or unassigned file extension.
.ncz	Unknown or unassigned file extension.
.nda	Unknown or unassigned file extension.
.nfb	Unknown or unassigned file extension.
.nfi	Unknown or unassigned file extension.
.npp	Unknown or unassigned file extension.
.nsa	Unknown or unassigned file extension.
.nvc	Unknown or unassigned file extension.
.nxg	Unknown or unassigned file extension.
.nx1	Unknown or unassigned file extension.
.n#c	Unknown or unassigned file extension.
.oad	Unknown or unassigned file extension.
.ols	Unknown or unassigned file extension.
.oog	Unknown or unassigned file extension.
.ork	Unknown or unassigned file extension.
.pdc	Unknown or unassigned file extension.
.ppr	Unknown or unassigned file extension.
.psh	Unknown or unassigned file extension.
.pvw	Unknown or unassigned file extension.
.qpc	Unknown or unassigned file extension.
.qss	Unknown or unassigned file extension.
.qzr	Unknown or unassigned file extension.
.rkr	Unknown or unassigned file extension.
.ro6	Unknown or unassigned file extension.
.rpk	Unknown or unassigned file extension.
.rru	Unknown or unassigned file extension.
.rwm	Unknown or unassigned file extension.
.sg2	Unknown or unassigned file extension.
.sjd	Unknown or unassigned file extension.
.sl9	Unknown or unassigned file extension.
.swx	Unknown or unassigned file extension.
.sy7	Unknown or unassigned file extension.
.tgc	Unknown or unassigned file extension.
.tgx	Unknown or unassigned file extension.
.tlg	Unknown or unassigned file extension.
.t05	Unknown or unassigned file extension.
.uad	Unknown or unassigned file extension.
.ubx	Unknown or unassigned file extension.
.ucf	Unknown or unassigned file extension.
.utb	Unknown or unassigned file extension.
.ut-	Unknown or unassigned file extension.
.uus	Unknown or unassigned file extension.
.vlc	Unknown or unassigned file extension.
.vpu	Unknown or unassigned file extension.
.vsf	Unknown or unassigned file extension.
.wku	Lotus 1-2-3 spreadsheet file
.wph	Unknown or unassigned file extension.
.wxv	Unknown or unassigned file extension.
.xer	Unknown or unassigned file extension.
.xfd	Unknown or unassigned file extension.
.xfz	Unknown or unassigned file extension.
.xmf	Unknown or unassigned file extension.
.xov	Unknown or unassigned file extension.
.zbm	Unknown or unassigned file extension.
.zfx	Unknown or unassigned file extension.
.zi_	Unknown or unassigned file extension.
.zo2	Unknown or unassigned file extension.
.zzz	Unknown or unassigned file extension.
.#$a	Unknown or unassigned file extension.
.#$f	Unknown or unassigned file extension.
.#$y	Unknown or unassigned file extension.
.#-1	Unknown or unassigned file extension.
.#-5	Unknown or unassigned file extension.
.@gs	Unknown or unassigned file extension.
.13o	Unknown or unassigned file extension.

.950	Unknown or unassigned file extension.
.mcl	Macro Command Language
.mcl	Multimedia Manager Collection File
.mcl	VectorWorks Template
.nss	Magentic screensaver file
.avs	Animation format
.clg	CollageMaker Graphic
.py	Yahoo! Instant Messenger Saved Messages
.ppv	Vox Proxy Animated PowerPoint
.aam	Shocked file
.acc	Document
.add	Additional information file
.aex	Armored extracted public key
.agr	Agreement information
.aif	Application information file
.ain	Compressed file archive
.aio	APL file transfer format file
.anm	Animation
.apb	Apollo OLE section file
.arr	Atari Cubase Arrangement
.ac2	Banana40, accounting / bookkeeping software bz Banana. ch SA - Lugano, Switzerland
.aeu	Microsoft AutoRoute Express Europe route
.afs	Font set
.agt	BullsEye Agent
.arg	Hdf Fort_ps file
.ark	Compressed file archive ARL
.arr	Bitmap image
.art	Art file
.art	Image
.asa	Active Server Document
.asd	Description file
.asi	Include; Assembly language header
.asl	File
.aspi	Audio Catalyst file
.atm	ATMosphere (TerraGen - landscape renderer)
.aut	IPIX automation
.av	Final Dreaft AV document file
.avb	Chat Character File
.awd	Document (org from "At Work Fax")
.bag	AAICWpro autoresponder file
.bar	Unix BAR compressed file archive
.bbl	TeX/BibTeX BiBLiographic reference
.bcd	Turbo Pascal Dos file
.bdc	Lingvo dictionary
.bfb	Ralcgm file
.blg	BibTex log
.bmf	Corel graphics (Binary Material Format)
.bol	MS Booasm Compressed Archive Library
.boo	Encoded file archive (ASCII) (Boo)
.bpk	Mime: application/octet-stream
.bsp	Quake map
.btn	JustButtons animated bitmap image format
.bwt	Blindwrite cd copier file
.c	Mime: text/x-c
.cal	CALS Raster Goup 1 image format
.cap	Compressed music file
.cap	Network Associates Sniffer Capture File
.cat	dBASE/CP Backup CATalogue-file
.cat	Rational Rose logical package
.cc	CC language source code file (cc)
.ccf	Symphony communications configuration file
.ccx	Corel Photo House : Graphics
.cdi	Compact Disk Interactive (Phillips CD-I IFF file)
.cdm	Music format (compressed)
.cdt	CorelDRAW Template
.cfm	HyperText Markup Language file WWW
.cgm	Mime: image/cgm
.ch	Clipper include
.cht	ChartViewer file
.cil	Clip Gallery download package
.cim_	Mac File Type
.cin	Digital moving Picture eXchange bitmap by the Society of Motion Picture and Television Engineers
.clf	ListPro File
.clk	Corel R.A.V.E. Animation File
.cma	Applix TM1 Database
.cmb	Chromeleon Backup Archive
.cml	PADGen Company Info File
.cmx	Corel Presentation Exchange, Corel Metafile Exchange or Clipart
.cpr	Corel PRESENTS Presentation
.csb	Pci Ncr3030 Ncrflash file
.csd	Bitstream Fontware File
.cst	Macromedia Director CaST (resource) file
.ct	SciTex Continuous Tone bitmap image (32bit CMYK)
.ctf	TIFF Compressed File
.cvs	CVS and VMS sound files (continous variable slope)
.daf	Mime: application/vnd.Mobius.DAF
.db	Solid Database
.db3	dBASE III : Database
.dbc	OrCAD Capture CIS Database Conf.
.dbf	data base file for Arago
.dbf	data base file for DataBoss
.dbs	Datafile (PRODAS)
.dcd	FORTRAN Data File
.dcg	Digocat Data File read by Digocat.exe (Digital Offline Catalog, Reader)
.dcp	Terminal Program; DynaComm Script
.dcx	Macro file
.dd	Image Doodle (C64)
.dec	DEC DX, WPS Plus : Document
.dem	3d Graphic
.dem	Quake/Hexen II .DEM file format

.dft	BullsEye (style sheet)
.dft	WaveMaker file
.dfx	Micrografx Designer Effects = DLL
.dgr	Design CAD (Microstation95)
.diz	Description In Zip File File_id.diz
.dnl	comma seperated value file from Concordance Database by Dataflight Software, Inc.
.doc	Palm Pilot DOC file format
.dpg	Deleted program group; Windows Applications Manager
.drl	Music source file ( computer game)
.dsb	Rayman2 play
.dsm	Delphi Symbol File
.dso	MS Visc 6 Dev studio workspace file(renamed to old, converted from vc5)
.dss	Digital Soup sound file
.dsx	Visual Basic active designer binary file
.dtf	MS Exchange Header File (Used when sending to Lotus Notes)
.dwg	Drafix CAD
.d~l	.DLL copy (Creative)
.ecs	Easy Clean Selection
.ens	Enable spreadsheet, version 3.0, 4.0, and 4.5
.esi	Diskeeper disk defragmenter
.esp	Active Media Eclipse Screensaver Project
.eth	Ethnograph 3 document
.ewb	Electronics Workbench
.ex	Cequadrat Backup file
.exp	Express schema (STEP)
.fae	MS Office 97 file converter DLL
.fda	System Sysutil file
.fdf	Mime: application/vnd.fdf
.fil	File template (Application Generator)
.fil	WordPerfect overlay
.fit	Graphics and data (Flexible Image Transport System)
.flb	Papyrus Format LiBrary
.fon	Procomm Plus log of all calls
.frp	Form (PerForm PRO Plus/FormFlow)
.fxp	FoxPro executable precompiled .prg
.h	Mime: text/plain
.hdr	Apollo HRDU image format
.hds	Hierarchical Data System
.hips	Bitmap image
.his	HIStory of executing/viewing/editing (DN)
.hplg	Mac File Type
.htmls	Mime: text/html
.hw3	Hyperwriter! Document
.hwp	Hangul (Korean) Word Processor File
.ic	Modula-3 : M3CG intermediate language file
.ice	Cooltalk audio
.idb	IDA : Database
.idx	Microsoft Outlook Express file: mailbox
.iff	Maya image format
.ifx	IMAGINE effect file
.iges	Mime: model/iges
.img	Planetary Data System image format
.imz	WinImage compressed file
.ips	International patching system binary patch file
.ivu	Picture : IVUE Live Picture Drawing
.jad	Mime: text/vnd.sun.j2me.app-descriptor
.jcd	FlashGet File
.jhtml	HTML-page
.jj	Doodle C64 Compressed image format
.job	MS Scheduler Job file
.jsm	JugWin : Jigsaw file
.key	Archive .key-file (OS/2)
.lay	Word chart Layout (APPLAUSE)
.lcr	Mime: application/x-digitalloca
.ld	Telix Long Distance codes file
.let	Maestro Icons file
.lfa	LifeForm File
.lic	LICense file
.liq	Liquid Tracker Module
.lis	Compiler listing file
.lnd	3D Landscape Data
.lng	Adobe Acrobat language plug-in vdkhome
.lo_	WINXP SYSTEM32 WBEM , Logs file
.lst	1st Reader keyboard macro
.lst	LiST text file
.lzh	LH ARC compressed archive
.m	Script file (Miranda language)
.mai	Mail message (VAX)
.mbm	EPOC multi-bitmap file
.mbm	Psion Series 5 image format
.mdm	Modem definition (TELIX)
.mem	Context4 file
.met	OS/2 PM Meta file
.mgrs	Military Grid Reference System
.mgx	Micrografx Designer drawing (Clipart)
.mhtml	Mime HTML file
.mix	Power C object file
.mkw	Michael K. Weise compressed audio file, no loss of quality as occurs with .MP3, but they are larger
.mlf	Autodesk mapguide layer file
.mod	Mime: audio/x-mod
.mof	Mime: application/x-yumekara
.mp	Movie (MPEG compressed)
.mp3_	Mac File Type
.mpe	Mime: video/mpeg
.mpp	Mime: application/vnd.ms-project
.mpp_	Mac File Type
.mrc	Mime: application/marc
.mri	MRI Scan
.mrl	Mime: text/x-mrml
.ms	Modula-3 intermediate assembly file

msd	DINFO file
.mwp	SmartMaster (Lotus Word Pro)
.mxl	PackRat 5.0 support file
.naa	MSNBC News alert advertising data
.navionicS	GPS chart format
.nb	Mime: application/mathematica
.ncd	Norton Change Directory (disk directory information)
.nct	CoverDesigner Template image format
.nl	Norton Desktop Icon Library
.nlm	Novell Netware Loadable Module
.nlp	Newsletter Profi 2001
.npx	Mime: application/x-netfpx
.nrv	Nero Video-CD Compilation
.ntf	Lotus Notes database template
.nws	Internet News Message text or HTM
.nx__	Mac File Type
.obj	Wavefront 3D Object
.ogc	Organica doc
.old	Backup file
.olk	MS Mail mailbag lock
.opj	OrCAD Capture Project
.or2	Mime: application/vnd.lotus-organizer
.ora	Oracle parameter
.p	Applause picture file : Graphics
.p01	Image file created by burning software
.p7b	Mime: application/x-pkcs7-certificates
.p7m	PKCS #7 MIME Message (RFC 2311 MIME)
.p7m	S/MIME PKCS : Digital identification file
.p7s	Mime: application/pkcs7-signature
.p7s	PKCS #7 Signature
.pae	Mime: audio/x-epac
.paf	PARIS Audio Format
.pak	Infonie file
.paq	Quantum archive
.par	POV-Ray parameter file
.part1	Netobjects fusion Netobjects System file
.pas	Pascal - Borland Delphi : Pascal language source code file
.pat	Sound
.pb	WinFax Pro: Phone Book
.pbd	Mime: application/vnd.powerbuilder6
.pcc	Image File
.pcg	Graphics file
.pdb	Photo Deluxe Image
.pdb	Physical model backup file (PowerDesigner)
.pdb	Pilot Image Format
.pdi	IBM VideoTex
.pdm	Sybase Power Designer File
.pdp	Print Shop Deluxe : Document
.pdx	Index file of .PDF
.pex	Proboard : Proboard EXecutable program file
.pf	Progress Parameter File
.pfw	Symantec Shared Liveadvisor file
.pgm	Mime: image/x-portable-greymap
.pgm	Program (Signature)
.pgn	ChessMaster : game notation
.php4	HTML page with PHP (HyperText PreProcessor)
.phtml	HTML page that includes a PHP script
.pic	15/24bit RGB Autodesk Animator PIC/CEL files : Bitmap graphics
.pid	Unix : Process ID file
.pip	JPEG,JPG,JPE, JFIF,PJPEG compressed bitmap picture
.pk3	Quake 3 Arena File (maps, etc. )
.pld	PhotoDeluxe PhotoLine image document
.plg	Microsoft Developer Studio : Build log
.pls	Mime: audio/x-mpequrl
.plt	Geoworks Glue Software platform file
.plx	PERL programming language script
.pmb	Picture; Bitmap/tbv
.pml	Mime: application/vnd.ctc-posml
.png_	Mac File Type
.pot	PowerPoint Template
.ppa	PowerPoint Add-in/slides
.ppk	PPK : Archive (many distributives)
.ppp	Serif PagePlus Publication
.ppw	Micrografx Picture Publisher wizard
.pqf	Corel Presentations Runtime
.prd	Lode Runner game
.prj	AutoDesk 3D Studio File
.prm	BullsEye style file
.ps1	Ps file
.psd	Periscope Debugger definition file
.psr	PowerSoft : Report file
.pst	BMail postbox file
.ptb	PubTech BatchWorks : Script
.ptd	Pro/ENGINEER : Table file
.pte	"Picture to Exe" project
.ptk	Quicken intuit(old) de online dat file
.ptm	Polytracker : Music format
.pxn	Pixtran file
.qbw	QuickBooks for Windows spreadsheet
.qdb	Quicken backup file
.qdf	Quicken 2002 file
.qdt	QuickBooks data file
.r05	Norton Ghost rar file
.ras	Mime: image/cmu-raster
.ras	Sun Raster bitmap image, UNIX
.rb	Mime: application/x-rocketbook
.rdf	Compiled UIC source code (Geoworks UI Compiler)
.rle	Intergraph Format image format
.rle	Run Length Encoded bitmap image
.rmap	Real Pool Image