: X

.x
DirectX Model File Microsoft
.x32
Adobe Xtra File Adobe Systems
.x3d
Xara3D Project MAGIX
.x3f
SIGMA X3F Camera RAW File SIGMA
.x4k
XML4King Configuration File Optimal Performance
.x64
Commodore 64 Disk Image N/A
.xa
The Sims Audio File Electronic Arts
.xadd
Expression Web Add-in Microsoft
.xaf
3ds Max XML Animation File Autodesk
.xaiml
XAIML Chatterbot Database File Devyn Collier Johnson
.xaml
XAML File Microsoft
.xamlx
Visual Studio Workflow Service File Microsoft
.xan
Worms Map File Team17 Software
.xap
Silverlight Application Package Microsoft
.xappl
Spoon XML Application Configuration File Spoon
.xar
Xara Xtreme Drawing MAGIX
.xas
Pro/ENGINEER Assembly Instance Accelerator File Parametric Technology
.xba
OpenOffice.org Basic Module File Oracle
.xbap
XAML Browser Application File Microsoft
.xbc
SMART Notebook File SMART Technologies
.xbdoc
Xiosis Scribe Document Xiosis
.xbe
Xbox Executable File Microsoft
.xbel
XBEL Bookmarks File Python XML SIG
.xbk
XenServer Backup File Citrix
.xbl
Extensible Binding Language File Mozilla
.xbm
X11 Bitmap Graphic N/A
.xbplate
Xiosis Scribe Template Xiosis
.xbsav
Mass Effect 2 Xbox Saved Game Electronic Arts
.xbt
SMART Notebook Template File SMART Technologies
.xcappdata
Xcode App Data File Apple
.xcarchive
Xcode Archive Apple
.xcdatamodel
Xcode Core Data Model File Apple
.xcdatamodeld
Xcode Core Data Model File Apple
.xcf
GIMP Image File GIMP
.xcode
Xcode Project Apple
.xcodeproj
Xcode Project Apple
.xcsl
CineStyle Color Correction File Technicolor
.xcsnapshots
Xcode Snapshot Apple
.xcu
OpenOffice.org Configuration File OpenOffice.org
.xcworkspace
Xcode Workspace File Apple
.xdb
Symantec Virus Database File Symantec
.xdi
WinArchiver Extended Disc Image File WinArchiver Computing
.xdl
XML Schema File N/A
.xdp
XML Data Package Adobe Systems
.xdr
XML-Data Reduced File Microsoft
.xds
DS Game Maker Project File Invisionsoft
.xdw
Fuji Xerox DocuWorks File Fuji Xerox
.xef
WinAce Encrypted File N/A
.xej
Expression Encoder Job File Microsoft
.xel
Expression Encoder Live Encoding File Microsoft
.xem
PowerDesigner Model definition File Sybase
.xen
Guitar Hero III Data File Activision
.xensearch
XenCenter Saved Search File Citrix
.xep
eManager File Packaging Information N/A
.xer
Primavera P6 Project File Oracle
.xes
eManager Skins Definition N/A
.xesc
Expression Encoder Screen Capture File Microsoft
.xet
eManager Process Definition N/A
.xev
eManager Auto-Update File N/A
.xex
Xbox 360 Executable File Microsoft
.xez
eManager Template Package N/A
.xfd
XFD File UWI
.xfdf
Adobe Acrobat XFDF File Adobe Systems
.xfdl
XFDL File UWI
.xfl
Flash Movie Archive Adobe Systems
.xfn
Ventura Printer Font N/A
.xfo
XSL-FO Formatted Form N/A
.xfr
iProcess Process Definition File TIBCO Software
.xfs
eRacer Sound File eRacer
.xft
Adobe Form Designer 5.0 File N/A
.xgml
Graph Modeling Language XML File N/A
.xgmml
XGMML Graph File N/A
.xgp
Xfire Game Patcher File XGP
.xgs
XACT Global Settings File Microsoft
.xht
XHTML File N/A
.xhtm
Extensible Hypertext Markup Language Document N/A
.xhtml
Extensible Hypertext Markup Language File N/A
.xi
Fasttracker 2 Extended Instrument File N/A
.xib
Interface Builder File Apple
.xif
ScanSoft Pagis File Nuance Communications
.xise
Xilinx ISE Project File Xilinx
.xl
Excel Spreadsheet Microsoft
.xla
Excel Add-In File Microsoft
.xlam
Excel Open XML Macro-Enabled Add-In Microsoft
.xlb
Excel Toolbars File Microsoft
.xlc
Excel Chart Microsoft
.xld
Excel Database File Microsoft
.xlf
XLIFF Document OASIS
.xlgc
ExpressK Database File Prosystech
.xliff
XLIFF Localization File OASIS
.xlk
Excel Backup File Microsoft
.xll
Excel Add-In File Microsoft
.xlm
Excel Macro Microsoft
.xlmv
Xunlei Movie File Thunder Network Technologies
.xlnk
XML Shortcut File N/A
.xlr
Works Spreadsheet Microsoft
.xls
Excel Spreadsheet Microsoft
.xlsb
Excel Binary Spreadsheet Microsoft
.xlshtml
Microsoft Excel HTML Spreadsheet Microsoft
.xlsm
Excel Open XML Macro-Enabled Spreadsheet Microsoft
.xlsmhtml
Microsoft Excel MIME HTML Spreadsheet Microsoft
.xlsx
Microsoft Excel Open XML Spreadsheet Microsoft
.xlt
Excel Template Microsoft
.xlthtml
Microsoft Excel HTML Spreadsheet Template Microsoft
.xltm
Excel Open XML Macro-Enabled Spreadsheet Template Microsoft
.xltx
Excel Open XML Spreadsheet Template Microsoft
.xlv
Excel Visual Basic Module Microsoft
.xlw
Excel Workspace File Microsoft
.xm
Fasttracker 2 Extended Module Fasttracker
.xmap
XMind 2007/2008 Workbook XMind
.xmb
Age of Empires Game Data File Microsoft
.xmcd
Mathcad Worksheet File Parametric Technology Corporation
.xmcdz
Mathcad Compressed Worksheet File Parametric Technology Corporation
.xmct
Mathcad XML Worksheet Template PTC
.xmd
Extended Media Disc Image Engelmann Media
.xmf
Cal3D XML Mesh File Cal3D
.xmi
XML Metadata Interchange File Object Management Group
.xmind
XMind Workbook File XMind
.xml
XML File N/A
.xmlper
LeCroy Binary Waveform File N/A
.xmm
3ds Max XML Animation Map File Autodesk
.xmmap
MindManager XML Map File Mindjet
.xmp
Extensible Metadata Platform File Adobe Systems
.xmpz
Miradi XML Project File Benetech
.xmv
Xbox Media Video File Microsoft
.xmz
FastTracker 2 Extended Module Starbreeze Studios
.xnb
XNA Game Studio Binary Package Microsoft
.xnk
Exchange Shortcut N/A
.xnt
QuarkXPress Extension File Quark Software
.xof
Reality Lab 3D Image File RenderMorphics
.xol
Swiss Map Overlay swisstopo
.xom
Worms 3D Object File Team17 Software
.xoml
Windows Workflow File N/A
.xp
Fastracker 2 Pattern Starbreeze Studios
.xp2
XPilot NG XPilot NG
.xp3
KiriKiri Package File KiriKiri
.xp4
KiriKiri Package KiriKiri
.xpaddercontroller
Xpadder Controller Profile Xpadder
.xpd
XML Pipeline Document N/A
.xpdl
XPDL Module Workflow Management Coalition
.xpg
Autoplay Media Studio Exported Page Indigo Rose
.xpi
Mozilla Installer Package Mozilla
.xpj
RoboHelp HTML Project File Adobe Systems
.xpk
WWE RAW Model File THQ
.xpl
LcdStudio Playlist File LcdStudio
.xpm
X11 Pixmap Graphic N/A
.xpp
X++ Source Code File Microsoft
.xpr
Pro/ENGINEER Part Instance Accelerator File Parametric Technology
.xps
XML Paper Specification File Microsoft
.xpt
Mozilla Firefox Component N/A
.xq
XQuery File The W3C XML Query Working Group
.xql
XML Query Language File The W3C XML Query Working Group
.xqm
XQuery Module The W3C XML Query Working Group
.xqt
SuperCalc Macro File N/A
.xquery
XQuery Source Code File The W3C XML Query Working Group
.xqy
XQuery Source File The W3C XML Query Working Group
.xrf
Cal3D XML Materials File Cal3D
.xrff
Extensible Attribute-Relation File Format University of Waikato
.xrm-ms
Microsoft Security Certificate Microsoft
.xrns
Renoise Song File Renoise
.xrp
RationalPlan Project File Stand By Soft
.xry
XRY Data File Micro Systemation
.xs
Age of Empires 3 Map AI Generator Microsoft
.xsb
XACT Sound Bank Microsoft
.xsc
Visual Studio Dataset Internal Info File Microsoft
.xsd
XML Schema Definition N/A
.xsf
InfoPath Form Definition File Microsoft
.xsi
Softimage XSI 3D Image Autodesk
.xsiaddon
Softimage Add-on File Autodesk
.xsl
XML Style Sheet N/A
.xslic
XenServer License File Citrix
.xslt
XSL Transformation File N/A
.xsn
InfoPath Form Template File Microsoft
.xsp
XBMC Smart Playlist File XBMC
.xspf
XSPF Playlist File N/A
.xss
XML Style Sheet Oracle
.xst
WebSphere Query Template IBM
.xsvf
Xilinx Serial Vector Format File Xilinx
.xsx
Visual Studio XML Schema Layout File Microsoft
.xt
Xdebug Trace File N/A
.xtg
Extensible TreeGraph File Ben Stöver
.xtl
Vietcong Data File Pterodon
.xtm
CmapTools Exported Topic Map IHMC
.xtp
AutoCAD Exported Tool Palettes File Autodesk
.xtreme
Winstep Xtreme Theme Pack Winstep Software Technologies
.xui
Xbox 360 User Interface File Microsoft
.xul
XML User Interface Language File Mozilla
.xur
Xbox 360 Binary User Interface File Microsoft
.xv0
Lattice XVL Structure File Lattice Technology
.xv3
Lattice XVL Geometry File Lattice Technology
.xva
XenServer Virtual Appliance File Citrix
.xvct
VISE XML Project File MindVision Software
.xvid
Xvid-Encoded Video File Xvid
.xvm
VMware Console Configuration File VMware
.xvmconf
World of Tanks XVM Configuration File XVM
.xwb
XACT Wave Bank Microsoft
.xwd
X Windows Dump Image N/A
.xwf
OmniPage Workflow File Nuance Communications
.xwk
Crosstalk Communicator Keyboard Mapping File Intel
.xwp
XMLwriter Project N/A
.xws
Xara Web Designer Graphic MAGIX
.xx
XXEncoded File N/A
.xxd
Brixx Planner Calendar Brixx
.xxe
XXEncoded File N/A
.xxx
Compucon Singer Embroidery File Compucon USA
.xy
XYWrite Document XyQuest
.xy3
XYWrite III Document N/A
.xyp
XYWrite Plus Document N/A
.xys
XYplorer Script File Donald Lessau
.xyw
XYWrite for Windows Document N/A
.xyz
Molecule Specification File N/A
.xyzv
Celestia Sampled Trajectory File Celestia Development Team
.xz
XZ Compressed Archive Tukaani
.xzfx
ZipLogix ZipForm File ZipLogix
.x_b
Parasolid Model Part File Siemens PLM Software
.x_t
Parasolid Model Part File Siemens PLM Software