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file extension Windows/OS2/Apple/Unix/Dos

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Universal dump utility for non-destructive dump/list/string search etc dump.zip

X = Alysis SuperDisk self-extracting archive

X = Lex language source code

X = Microsoft Direct-X SDK

X = Stardent AVS X bitmap image (24bit)

X = X-file animation (Direct3D) (DeepV2)

X = X1 archive

X = XYZ chemical modeller output file

X-PNG = Mime: image/png

X01 = Paradox secondary index file

X02 = Paradox secondary index file

X03 = Paradox secondary index file

X04 = Paradox secondary index file

X05 = Paradox secondary index file

X06 = Paradox secondary index file

X07 = Paradox secondary index file

X08 = Paradox secondary index file

X09 = Paradox secondary index file

X10 = Bitmap image (X Window dump)

X11 = Bitmap image (X Windows system window dump)

X16 = Macromedia Extra document (16 -bit program extension)

X20 = Xtree (gold) Dos help file

X32 = Macromedia Extra document (32 -bit program extension)

X3D = Mime: application/vnd.hzn-3d-crossword

X3D = x3d and xdart formats

X3F = Photoshop.CameraRawFileFoveon.10 open with: "%ProgramFiles%\Adobe\Adobe Photoshop CS3\Photoshop.exe" "%1" PerceivedType Image PerceivedType Image Content Type application/vnd.ms-wpl

X40 = Xtree (gold) Dos help file

X4M = TeamLinks Mail File Data

X5 = Rockwell Software Logix 5 File

X50 = Xtree (gold) Dos help file

X60 = Xtree (gold) Dos help file

X70 = Xtree (gold) Dos help file

X80 = Xtree (gold) Dos help file

X90 = Xtree (gold) Dos help file

XA = Sony Playstation audio files

XA0 = Xtree (gold) Dos help file

XAB = Microsoft Mail address book

XAF = Active VRML

XAML = Windows.XamlDocument open with: "%Root%\WINDOWS\system32\PresentationHost.exe" "%1" %* Content Type application/xaml+xml

XAML = Windows.XamlDocument open with: "%Root%\WINDOWS\system32\PresentationHost.exe" "%1" %* PerceivedType Image PerceivedType Image Content Type application/xaml+xml

XAML = Windows.XamlDocument open with: "%WinDir%\System32\PresentationHost.exe" "%1" %* Content Type application/xaml+xml

XAML = Windows.XamlDocument open with: "%WinDir%\system32\PresentationHost.exe" "%1" %* PerceivedType image Perceived Type text Content Type application/xaml+xml

XANN = XANN Packer format (music/sound)(Asle / ReDoX)

XAR = Corel Xara drawing

XAR = Mime: application/vnd.xara

XB0 = Xtree (gold) Dos help file

XBAP = Windows.Xbap open with: "%Root%\WINDOWS\system32\PresentationHost.exe" "%1" %* Content Type application/x-ms-xbap

XBAP = Windows.Xbap open with: "%Root%\WINDOWS\system32\PresentationHost.exe" "%1" %* PerceivedType Image PerceivedType Image Content Type application/x-ms-xbap

XBAP = Windows.Xbap open with: "%WinDir%\System32\PresentationHost.exe" "%1" %* Content Type application/x-ms-xbap

XBAP = Windows.Xbap open with: "%WinDir%\system32\PresentationHost.exe" "%1" %* PerceivedType image Perceived Type text Content Type application/x-ms-xbap

XBD = Mime: application/vnd.fujixerox.docuworks.binder

XBF = Data base file

XBM = Mime: image/x-xbitmap

XBM = Mime: image/x-xbm

XBM = Mime: image/xbm

XBM = X Windows system BitMap image

XBN = cygnus ld-scripts file

XBW = Crossword

XB~ = compressed Ic file

XC = Bitmap image (X server screen)

XC0 = Xtree (gold) Dos help file

XCB = CommandBarsDesigner.Document open with: %ProgramFiles%\CODEJO~1\MFC\XTREME~1.1\Utils\COMMAN~1.EXE "%1"

XCEL = (MAC CREATOR CODE) Excel 1 (PC ext: XLS)

XCEL = (MAC CREATOR CODE) Excel 4 (PC ext: XLS)

XCEL = (MAC CREATOR CODE) Excel 5 (PC ext: XLS)

XCEL = (MAC CREATOR CODE) Excel 6

XCEL = (MAC FILE_TYPE) MS Excel

XCF = Gimp Bitmap image format

XCK = Extended crack file (usually text)

XCL = Xtree for Win script

XCOF = (MAC FILE_TYPE) Mac OS Object Library

XD = Ccs-lib.2 Examples Motif-cc file

XD0 = Xtree (gold) Dos help file

XDCT = (MAC FILE_TYPE) XPress Dictionary

XDE = Tgif-3.0 file

XDF = Extended disk format image (OS/2 xdfcopy.exe)

XDL = XML Schema file

XDM = Mime: application/x-xdma

XDM = X-Windows Dump

XDMA = Mime: application/x-xdma

XDO = Animation Formula Graphics

XDOC = (MAC FILE TYPE) Xpress (all versions) (PC ext: QXD)

XDOC = (MAC FILE TYPE) Xpress file

XDOC = (MAC FILE_TYPE) XPress 3 Layout

XDOC = Xerox ScanWorX and Textbridge OCR File Format (Word)

XDP = AcroExch.XDPDoc open with: "%ProgramFiles%\Adobe\Reader 8.0\Reader\AcroRd32.exe" "%1" Content Type application/vnd.adobe.xdp+xml

XDP = AcroExch.XDPDoc special configuration file for application(binary format) PerceivedType Image PerceivedType Image Content Type application/vnd.adobe.xdp+xml

XDR = Mime: video/x-amt-demorun

XDR = XML data reduced file

XDW = Mime: application/vnd.fujixerox.docuworks

XE0 = Xtree Dos help file

XED = XED chemical modeller input file

XED = XED chemical modeller output file

XEN = Xenu Document open with: XENU.EXE

XEVGENXML = XEV.GenericApp open with: "%ProgramFiles%\Internet Explorer\IEXPLORE.EXE" -nohome

XEVGENXML = XEV.GenericApp open with: "%ProgramFiles%\Internet Explorer\iexplore.exe" -nohome

XFDF = AcroExch.XFDFDoc open with: "%ProgramFiles%\Adobe\Acrobat 5.0\Reader\AcroRd32.exe" "%1" Perceived Type text Content Type application/vnd.adobe.xfdf

XFDF = AcroExch.XFDFDoc open with: "%ProgramFiles%\Adobe\Reader 8.0\Reader\AcroRd32.exe" "%1" Content Type application/vnd.adobe.xfdf

XFDF = AcroExch.XFDFDoc special configuration file for application(binary format) PerceivedType Image PerceivedType Image Content Type application/vnd.adobe.xfdf

XFDL = Mime: application/vnd.xfdl

XFI = Latex Figures file

XFM = Cooledit 1.50 file

XFM = Coolwave 2000 file

XFN = Printer font (Xerox 4045) (Ventura Publisher)

XFR = Ventura Publisher bitmap editor font file

XFT = 24 pin printer font (ChiWriter)

XFX = Fax File (various)

XG0 = Database Index; Paradox secondary index; see YG0; changes to XG1

XG1 = Database Index; Also XG2, XG3...

XG2 = Database Index; Also XG3...

XG3 = Database Index; Also XG4...

XGL = MegaBitz graphics language file

XGS = XACT.xgs.File open with: "%Root%\directx\directx10\Microsoft DirectX SDK (November 2008)\Utilities\Bin\x86\XACT3.exe" "%1"

XGZ = MegaBitz vector drawing

XGZ = Mime: xgl/drawing

XHT = FirefoxHTML open with: "%ProgramFiles%\Mozilla Firefox\firefox.exe" -requestPending -osint -url "%1" PerceivedType image Perceived Type text Content Type application/xhtml+xml

XHT = FirefoxHTML open with: %Root%\PROGRA~1\MOZILL~1\FIREFOX.EXE -requestPending -osint -url "%1" Content Type application/xhtml+xml

XHT = xhtfile special configuration file for application(binary format) Perceived Type text Content Type application/xhtml+xml

XHTML = Libxml Html file

XI = Fastracker 2.0 instrument file

XIF = eXtended Image File Format

XIF = Mime: image/vnd.xiff

XIF = Xerox DIFF image format

XIM = X11 Xim Toolkit bitmap

XIP = HP95 Execute-in-place program (modified EXE/like com)

XL = Mime: application/excel

XL = Ms Excel spreadsheet

XL$ = Modem Bitware Fax disk2 file

XLA = Mime: application/excel

XLA = Mime: application/vnd.ms-excel

XLA = Mime: application/x-excel

XLA = Mime: application/x-msexcel

XLA = Ms eXceL Addin macro sheet

XLA = Xlib Archive (Xlib graphics library)

XLA5 = (MAC FILE_TYPE) Excel 5

XLA8 = (MAC FILE_TYPE) Excel 98 Add-in

XLA_ = (MAC FILE_TYPE) Excel 4 Add-In

XLAM = Excel.AddInMacroEnabled open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE" /e Content Type application/vnd.ms-excel.addin.macroEnabled.12

XLAM = Excel.AddInMacroEnabled open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE" /e PerceivedType Image PerceivedType Image Content Type application/vnd.ms-excel.addin.macroEnabled.12

XLB = Mime: application/excel

XLB = Mime: application/vnd.ms-excel

XLB = Mime: application/x-excel

XLB = Ms ExceL Spreadsheet

XLB4 = (MAC FILE_TYPE) Excel 4 Toolbar

XLB5 = (MAC FILE_TYPE) Microsoft Toolbar

XLB8 = (MAC FILE_TYPE) Excel 8 Toolbar

XLBN = (MAC FILE TYPE) Excel 1 (PC ext: XLS)

XLBN = (MAC FILE TYPE) Excel 1 spreadsheet

XLBN = (MAC FILE_TYPE) Lotus 1-2-3 Worksheet

XLC = Microsoft Excel chart

XLC = Mime: application/excel

XLC = Mime: application/vnd.ms-excel

XLC = Mime: application/x-excel

XLC3 = (MAC FILE_TYPE) Excel 3 Chart

XLC4 = (MAC FILE_TYPE) Excel 4

XLC_ = (MAC FILE_TYPE) Excel 2.2 Chart

XLD = Microsoft Excel dialogue

XLD = Mime: application/excel

XLD = Mime: application/x-excel

XLDE = (MAC FILE_TYPE) Dialog Edito

XLG = Xnetech Engraving Logo File

XLK = Microsoft Excel backup

XLK = Mime: application/excel

XLK = Mime: application/x-excel

XLL = Microsoft Excel add-in

XLL = Mime: application/excel

XLL = Mime: application/vnd.ms-excel

XLL = Mime: application/x-excel

XLL_ = (MAC FILE_TYPE) Excel 4 Add-In

XLM = Microsoft Excel macro

XLM = Mime: application/excel

XLM = Mime: application/vnd.ms-excel

XLM = Mime: application/x-excel

XLM3 = (MAC FILE_TYPE) Excel 3 Macro

XLM4 = (MAC FILE_TYPE) Excel 4

XLM_ = (MAC FILE_TYPE) Excel 2.2 Macro

XLPF = (MAC FILE_TYPE) Excel Setting File

XLR = MS Works File

XLS = Microsoft Excel worksheet

XLS = Mime: application/excel

XLS = Mime: application/vnd.ms-excel

XLS = Mime: application/x-excel

XLS = Mime: application/x-msexcel

XLS3 = (MAC FILE TYPE) Excel 3 spreadsheet

XLS3 = (MAC FILE_TYPE) Excel 3 Spreadsheet

XLS4 = (MAC FILE TYPE) Excel 4 (PC ext: XLS)

XLS4 = (MAC FILE TYPE) Excel 4 spreadsheet

XLS4 = (MAC FILE_TYPE) Excel 4

XLS5 = (MAC FILE TYPE) Excel 5 (PC ext: XLS)

XLS5 = (MAC FILE_TYPE) Excel 5

XLS8 = (MAC FILE_TYPE) Excel 98 Spreadsheet

XLS_ = (MAC FILE TYPE) Excel 2.2 spreadsheet

XLS_ = (MAC FILE_TYPE) Excel 2.2 Spreadsh

XLSB = Excel.SheetBinaryMacroEnabled.12 open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE" /e PerceivedType document PerceivedType document Content Type application/vnd.ms-excel.sheet.binary.macroEnabled.12

XLSHTML = Excelhtmlfile open with: "%ProgramFiles%\Microsoft Office\Office10\EXCEL.EXE"

XLSHTML = Excelhtmlfile open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE"

XLSM = Excel.SheetMacroEnabled.12 open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE" /e PerceivedType document PerceivedType document Content Type application/vnd.ms-excel.sheet.macroEnabled.12

XLSMHTML = excelmhtmlfile special configuration file for application(binary format)

XLSX = Excel.Sheet.12 open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE" /e PerceivedType document PerceivedType document Content Type application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

XLT = Microsoft Excel template

XLT = Mime: application/excel

XLT = Mime: application/vnd.ms-excel

XLT = Mime: application/x-excel

XLT = Translation table (Lotus 123/Symphony/Procomm Plus)

XLT = Translation table many prgs

XLTB = (MAC FILE_TYPE) DataViz Translator

XLTHTML = Excelhtmltemplate open with: "%ProgramFiles%\Microsoft Office\Office10\EXCEL.EXE"

XLTHTML = Excelhtmltemplate open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE"

XLTM = Excel.TemplateMacroEnabled open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE" /e PerceivedType document PerceivedType document Content Type application/vnd.ms-excel.template.macroEnabled.12

XLTX = Excel.Template open with: "%ProgramFiles%\Microsoft Office\Office12\EXCEL.EXE" /e PerceivedType document PerceivedType document Content Type application/vnd.openxmlformats-officedocument.spreadsheetml.template

XLV = Microsoft Excel VBA module

XLV = Mime: application/excel

XLV = Mime: application/x-excel

XLW = Microsoft Excel workbook / workspace

XLW = Mime: application/excel

XLW = Mime: application/vnd.ms-excel

XLW = Mime: application/x-excel

XLW = Mime: application/x-msexcel

XLW3 = (MAC FILE_TYPE) Excel 3 Workbook

XLW4 = (MAC FILE_TYPE) Excel 4

XLW5 = (MAC FILE_TYPE) Excel 5

XLW_ = (MAC FILE_TYPE) Excel 2.2 Workbook

XLXML = Excelxmlss special configuration file for application(binary format)

XM = Cubic Player file

XM = FastTracker 2, Digital Tracker music module (MOD) file

XM = Mime: audio/x-mod

XM = Mime: audio/xm

XM = sound file

XMB = X-Wing Mission Briefing File

XMD = xmd special configuration file for application(binary format)

XMFG = created by MediaForge. See www.mediaforge.com

XMI = Compressed eXtended MIdi music

XML = Internet document; Extensible Markup Language; many prgs even. MS Office later 98

XML = Mime: application/xml

XML = Mime: text/vnd.IPTC.NewsML

XML = Mime: text/vnd.IPTC.NITF

XML = Mime: text/vnd.wap.si

XML = Mime: text/vnd.wap.sl

XML = Mime: text/vnd.wap.wml

XML = Mime: text/xml

XMP = Spice Pspice Lib file

XMS = eXtended Memory Specification (XMS), ver 3.0 Microsoft

XMT = XMT_auto_file open with: TriSpect.exe

XMTA = VisualStudio.xmta.9.0 open with: "%ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\devenv.exe" /dde Content Type application/xml

XMTA = VisualStudio.xmta.9.0 open with: "%ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\devenv.exe" /dde PerceivedType document PerceivedType document Content Type application/xml

XMZ = Mime: audio/x-mod

XMZ = Mime: xgl/movie

XMZ = XGL movie (MegaView)

XN = cygnus ld-scripts file

XNF = Standard Network File form

XNK = Microsoft Exchange shortcut

XNT = Spice Pspice Lib file

XOF = RenderMorphics

XOML = VisualStudio.xoml.9.0 open with: "%ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\devenv.exe" "%1" Content Type text/plain

XOML = VisualStudio.xoml.9.0 open with: "%ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\devenv.exe" "%1" PerceivedType document PerceivedType document Content Type text/plain

XON = Axon datafile

XOS = Xaos Tools bitmap image

XOT = Xnetech Job Output File

XOWN= Xtras files Type "Xtra" Creator "Xown" (MAC)

XP = System Util file

XPF = XPF open with: "%ProgramFiles%\Buhl\Mein Geld\MG.exe" "%1"

XPIX = Mime: application/x-vnd.ls-xpix

XPIX = Nonogram puzzle

XPK = Spice Pspice Lib file

XPL = Xset plugins file

XPM = Mime: image/x-xpixmap

XPM = Mime: image/x-xpm

XPM = Mime: image/xpm

XPM = Unix-X11 PixMap (256 color image for X Windows) (8bit text)

XPP = SqlServerReplication.Xpp special configuration file for application(binary format)

XPR = Mime: application/vnd.is-xpr

XPR3 = (MAC CREATOR CODE) EPS created by Xpress (PC ext: EPS)

XPR3 = (MAC CREATOR CODE) QuarkXpress 3

XPR3 = (MAC CREATOR CODE) Xpress (all versions) (PC ext: QXD)

XPR3 = (MAC FILE_TYPE) QuarkXPress

XPS = backup for xport .sps by sharkport

XPW = Mime: application/vnd.intercon.formnet

XPX = Mime: application/vnd.intercon.formnet

XQT = SuperCalc macro spreadsheet

XQT = Waffle executable

XR = cygnus ld-scripts file

XR1 = Epic MegaGames Xargon game data

XREF = Cross reference file(AIX as)

XRF = Cross Reference

XRM-MS = MSSLLFile open with: "iexplore.exe" "%1" Content Type text/xml

XRS = Realplayer Plugin Extresources file

XSB = XQ-Xsetup backup file

XSC = XML schema

XSD = XML schema description file

XSF = InfoPath.SolutionManifest.2 open with: "%ProgramFiles%\Microsoft Office\Office12\INFOPATH.EXE" "%1"

XSL = Mime: text/xml

XSL = Mime: text/xsl

XSL = Steuer2001 file

XSM = LEXIS-NEXIS Tracker

XSN = InfoPath.Solution.2 open with: "%ProgramFiles%\Microsoft Office\Office12\INFOPATH.EXE" "%1"

XSPF = VLC.xspf special configuration file for application(binary format)

XSR = Mime: video/x-amt-showrun

XSS = VisualStudio.xss.9.0 special configuration file for application(binary format) Content Type application/xml

XST = Tanner Ledit : Crossview data

XSTB = (MAC FILE_TYPE) TextBridge

XSU = Fortran Libf77 file

XSUM = Clapack file

XT = FastTracker music track

XT* = Crosstalk Related File

XTB = LocoScript External Translation TaBle

XTG = Quark Xpress 3.32 tags files

XTMP = (MAC FILE TYPE) Xpress template

XTMP = (MAC FILE_TYPE) XPress 3 Template

XTND = (MAC FILE_TYPE) Acrobat Plug-in

XTP = XTreeGold overlay

XTR = RealArcade Compressed Data File

Xtra = (MAC FILE_TYPE) Flash

XTRa = (MAC FILE_TYPE) Quark Xtra

XTRA = Xtras files Type "Xtra" Creator "Xown" (MAC)

XTRL = (MAC FILE_TYPE) XTND Translator Lis

XU = cygnus ld-scripts file

XUL = XML User Interface Language

XUL = Mime: text/xul

XV = VIFF bitmap image (Khoros Visualization Image File Format)

XVR = Superscape Viscape file

XVU = BOClean Database File

XWB = XACT.xwb.File open with: "%Root%\directx\directx10\Microsoft DirectX SDK (November 2008)\Utilities\Bin\x86\XACT3.exe" "%1"

XWC = Crosstalk for Windows Compiled Script

XWD = Mime: image/x-xwd

XWD = Mime: image/x-xwindowdump

XWD = X Windows window screen dump/bitmap

XWF = Yamaha XG Works

XWI = X-Wing Mission File

XWK = Keyboard mapping (Crosstalk)

XWP = Crosstalk for Windows Phone book

XWP = Xerox Writer document

XWS = Crosstalk for Windows Script

XWZ = Xset wizards file

XX = XXEncoded file (ASCII) (xxdecode/xxencode). 7bit ASCII attachments for email programs that can't handle binary attachments

XXE = XXEncoded file (ASCII) (xxencode). 7bit ASCII attachments for email programs that can't handle binary attachments

XXT = Extension DLL (seldom)

XXX = Sysinfo SA51SWE file

XY = XyWrite document

XY3 = XYWrite III document

XY4 = XY Write IV document

XY4v = XYWrite IV document

XY? = XyWrite document (?=version)

XYP = XY Write III Plus document

XYW = XYWrite for Windows 3x/4.0 document

XYZ = Mime: chemical/x-pdb

XYZ = Mime: chemical/x-xyz

XYZ = Moleculeviewer models file

XYZ = XYZ chemical modeller input file

Search: Use ctrl-F to search for item

Universal dump-utility for non-destructive dump/list/search string etc dump.zip

Select Extension by starting letter:

A- B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U -

V- W - X - Y - Z - OTHER - Allowed chars in Filenames - what is an extension?

If you find an extension missing, write! No guarantee given for completeness or correctness. If you feel an extension is outdated, write!
Authors and retailers: it is in the interest of us all and our customers to avoid the double use of extensions! Please help us keep this compilation up todate!
Send extension data to: update@file-ext.4uj.org
Any questions for not listed extensions or "what program opens xxx": search@file-ext.4uj.org
Any other questions, remarks, praise, flaming or reproach: info@file-ext.4uj.org
Compilation Copyright (c) 2002 R.Bitsch, Compilation Copyright (c) 2009,2010 R.Cooper-Bitsch