The list of file extensions beginning with the letter X

File extension	The full name of the file
File extension X	Lex Language Source Code
File extension X-PNG	Portable (Public) Network Graphic Bitmap
File extension X01	Corel Paradox Secondary Index
File extension X02	Corel Paradox Secondary Index
File extension X03	Corel Paradox Secondary Index
File extension X04	Corel Paradox Secondary Index
File extension X05	Corel Paradox Secondary Index
File extension X06	Corel Paradox Secondary Index
File extension X07	Corel Paradox Secondary Index
File extension X08	Corel Paradox Secondary Index
File extension X09	Corel Paradox Secondary Index
File extension X1	X1 Desktop Search Saved Search
File extension X10	X Window Bitmap Dump
File extension X11	X Window System Bitmap Image
File extension X13	Hooligans Game Archive
File extension X20	XTree Gold For Dos Help
File extension X32	Adobe Xtra Format
File extension X3A	MOTIF XF
File extension X3D	X3D Format
File extension X3DB	X3D Binary Format
File extension X3DV	Web3D X3D Graphics Image
File extension X3F	Sigma Camera RAW Picture Format
File extension X3G	MakerBot MakerWare Document
File extension X40	XtreeGold Dos Help
File extension X4K	XML4King Configuration Format
File extension X50	XtreeGold Dos Help
File extension X60	XTree Gold For Dos Help
File extension X64	Commodore 64 Emulator Disk Image
File extension X70	XTree Gold For Dos Help
File extension X80	Xtree Gold Dos Help
File extension X90	XTree Gold For Dos Help
File extension XA	Sony PlayStation Audio/video Format
File extension XA0	Xtree Gold Dos Help
File extension XAB	Microsoft Outlook Express Address Book
File extension XAC	SimCity Societies Game
File extension XAD	EXotic ADlib Sound Format
File extension XADD	Expression Web Add-in
File extension XADML	Amiga Forever XADML
File extension XAF	Xml Compatible Animation Format
File extension XAIML	XAIML Database Format
File extension XAML	Windows Markup File
File extension XAMLX	XAMLX Document Format
File extension XAN	Worms 3D Map Format
File extension XAP	Microsoft Silverlight Application Package Format
File extension XAPPL	Virtual Application Studio XML Application Configuration Format
File extension XAR	Xara Vector Drawing Format
File extension XARC	The Longest Journey Audio
File extension XAS	PTC Pro/Engineer Assembly Format
File extension XAV	Final Draft AV Document
File extension XAVC	Sony XAVC Video Format
File extension XB0	Xtree Gold Dos Help
File extension XBA	OpenOffice.org Basic Module Format
File extension XBAP	Microsoft Silverlight Application Package
File extension XBB	DVIPDFMx Output
File extension XBC	SMART Notebook Format
File extension XBD	JAXB Schema
File extension XBDOC	Xiosis Scribe Document
File extension XBE	Xbox Executable Format
File extension XBEL	XBEL Bookmarks Format
File extension XBF	Emperor Battle For Dune
File extension XBK	SMART Notebook Format
File extension XBL	Extensible Binding Language Format
File extension XBLR	Output Raw XBRL
File extension XBM	X Windows System Bitmap Image
File extension XBMML	Braille Music Score
File extension XBMP	Area 51 Game
File extension XBN	Xnick Nick Backup
File extension XBPLATE	Xiosis Scribe Template
File extension XBRL	Extensible Business Reporting Language
File extension XBSAV	Mass Effect 2 For Xbox Saved Game Format
File extension XBT	SMART Notebook Template Format
File extension XBX	Xbox Icon Or Picture
File extension XC0	Xtree Gold Dos Help
File extension XC3	Cast3D 3D Scene
File extension XCAPPDATA	Apple Xcode Application Data Format
File extension XCARCHIVE	Xcode Archive
File extension XCCONFIG	Apple Xcode Configuration Settings
File extension XCDATAMODEL	Xcode Core Data Model Format
File extension XCDATAMODELD	Xcode Core Data Model Format
File extension XCEL	Microsoft Excel For Mac Spreadsheet
File extension XCF	GIMP XCF Bitmap Image Format
File extension XCH	LinkAssistant Project Settings
File extension XCI	Adobe Reader Font Mapping
File extension XCL	XTree For Windows Script
File extension XCM	CmapTools Exported Concept Map
File extension XCO	Xilinx CORE Generator Log
File extension XCODE	Xcode Development Project Format
File extension XCODEPLUGIN	Apple Xcode Extension
File extension XCODEPROJ	XCode Project Format
File extension XCOF	Mac OS Object Library
File extension XCON	Conceal Encrypted Data
File extension XCORPUS	Xaira Corpora
File extension XCP	XLNT Script Command
File extension XCPLUGIN	Apple Xcode Extension
File extension XCPLUGINDATA	Xcode Plug-in Data
File extension XCR	Warlords Battlecry Game
File extension XCSCHEME	Apple Xcode Scheme
File extension XCSL	CineStyle Color Correction Settings Format
File extension XCSNAPSHOTS	Xcode Snapshot
File extension XCT	XVI32 Conversion
File extension XCTL	LabVIEW XControls
File extension XCU	OpenOffice.org Extension Control Format
File extension XCUSERSTATE	Xcode
File extension XCWORKSPACE	Xcode Workspace Format
File extension XD0	XtreeGold Dos Help
File extension XDA	Sencha Architect Project
File extension XDB	Norton AntiVirus Update Format
File extension XDC	Total Commander With DarkCrypt IV Plug-in Encrypted
File extension XDF	Externally Defined Function
File extension XDFL	XDFL Configuration
File extension XDI	WinArchiver Compressed ISO Image Format
File extension XDL	MS SQL Server XML Schema Format
File extension XDO	Oracle BI Publisher Resource Tracking
File extension XDOC	QuarkXPress 3.0 Document
File extension XDOCLET	JBoss XDoclet Reference
File extension XDP	Acrobat XML Data Package Format
File extension XDR	XML Data Reduced Format
File extension XDS	LCDStudio Design Format
File extension XDT	Win-Test Extra Data
File extension XDU	Backdoor.Win32.PcClient.xdu
File extension XDV	XeTeX
File extension XDW	DocuWorks Document Format
File extension XE0	XtreeGold Dos Help
File extension XEF	X-Genics EManager Form Data Format
File extension XEJ	Microsoft Expression Encoder Job Format
File extension XEL	Microsoft Expression Encoder 3.0 Live Jobs Format
File extension XEM	Sybase PowerDesigner Model Definition Format
File extension XEN	Activision Guitar Hero 3 Data Format
File extension XENSEARCH	XenCenter Saved Search Format
File extension XEO	Signwave Auto-Illustrator Extension
File extension XEP	EManager File Packing Definition
File extension XEQ	Sage MAS 90 Data
File extension XER	Primavera Project Management Propriety Exchange Format
File extension XES	X-Genics EManager Skins Definition
File extension XESC	Microsoft Expression Encoder Screen Capture Format
File extension XET	X-Genics EManager Process Definition
File extension XEV	X-Genics EManager Auto-update Format
File extension XEVGENXML	Adobe Dreamweaver
File extension XEX	Xbox 360 Executable Format
File extension XEZ	X-Genics EManager Template Package
File extension XFA	OneCncXR CAD
File extension XFBIN	Naruto Shippuden: Ultimate Ninja Storm 2
File extension XFC	X-Fonter Font Collection
File extension XFD	Adobe XFDL Format XML Form Format
File extension XFDF	Adobe Acrobat Forms Document
File extension XFDL	XFDL Format
File extension XFF	XFRX Database Output
File extension XFI	XICE Desktop Encrypted
File extension XFL	Adobe Flash Exchange Format
File extension XFM	OmniForm XML
File extension XFN	Corel Ventura Printer Font
File extension XFO	XSL-FO Formatted Form
File extension XFP	Microsoft SharePoint Extending Form Library Properties
File extension XFR	Ventura Publisher Bitmap Editor Font Format
File extension XFS	Gunbound Format
File extension XFT	Adobe Form Designer Form
File extension XFZ	French FlashCards Vocabulary
File extension XG0	Corel Paradox Secondary Index
File extension XG1	Corel Paradox Secondary Index
File extension XG2	Corel Paradox Secondary Index
File extension XG3	Corel Paradox Secondary Index
File extension XG4	Corel Paradox Secondary Index
File extension XG5	Corel Paradox Secondary Index
File extension XGA	Diamond Mind Baseball Game Account Information
File extension XGD	Xbox 360 Game Disc Layout
File extension XGL	XGL 3D CAD Model
File extension XGLL	EASE SpeakerLab Text
File extension XGML	Graph Modeling Language XML Format
File extension XGMML	XGMML Graph Format
File extension XGO	GeoConcept Add-on
File extension XGP	Xfire Profile Patcher Game List Format
File extension XGS	Disk Image Format
File extension XHB	HomeBank Data
File extension XHP	OpenOffice.org Extension Help Format
File extension XHT	Extensible HyperText Markup Language Format
File extension XHTM	Extensible HTML Format
File extension XHTML	Extensible HTML Format
File extension XI	Fastracker 2.0 Instrument Format
File extension XIB	Apple Interface Builder Format
File extension XIF	ScanSoft Pagis Format
File extension XIG	XML Instance Generator
File extension XIL	Xilize
File extension XILINC	Xilize Defintion
File extension XILIZE	Xilize Configuration
File extension XIM	X11 Xim Toolkit Bitmap
File extension XIN	OmniMark Include
File extension XIP	Xbox Dashboard
File extension XISE	Xilinx ISE Project Format
File extension XISO	Xbox ISO
File extension XIT	SpatialAnalyzer
File extension XIT64	SpatialAnalyzer
File extension XIX	IIS NNTP Subject Lists
File extension XIZ	Ximinez
File extension XJB	OEPE JAXB Wizard Bindings
File extension XJT	Compressed GIMP Image
File extension XKM	X KeyBoard
File extension XL	Microsoft Excel Spreadsheet Format
File extension XLA	Microsoft Excel Add-in Format
File extension XLA5	Microsoft Excel 5 For Mac Add-in
File extension XLA8	Microsoft Excel 98 For Mac Add-in
File extension XLAM	Microsoft Excel 2007/2010 Open XML Macro-enabled Add-in Format
File extension XLAMENX	Egis Encrypted Excel XLAM
File extension XLA_	Microsoft Excel 4 For Mac Add-in
File extension XLB	Microsoft Excel Toolbars Format
File extension XLB4	Microsoft Excel 4 For Mac Toolbars
File extension XLB5	Microsoft Excel 5 For Mac Toolbars
File extension XLB8	Microsoft Excel 98 For Mac Toolbars
File extension XLBN	Microsoft Excel 1 For Mac Toolbars
File extension XLC	Microsoft Excel Chart Format
File extension XLC3	Microsoft Excel 3 For Mac Chart
File extension XLC4	Microsoft Excel 4 For Mac Chart
File extension XLC_	Microsoft Excel 2 For Mac Chart
File extension XLD	Microsoft Excel Dialogue Format
File extension XLDB	AQUA Data
File extension XLF	XLIFF Document Format
File extension XLG	AutoCAD External Reference Log
File extension XLGC	ExpressK Database Format
File extension XLI	SIEMENS PLM Software NX 7.5 Log
File extension XLIFF	XLIFF Localization Format
File extension XLK	Microsoft Excel Backup Format
File extension XLL	Microsoft Excel Add-in Format
File extension XLL_	Microsoft Excel 4 For Mac Add-in
File extension XLM	Microsoft Excel Macro Format
File extension XLM3	Microsoft Excel 3 For Mac Macro
File extension XLM4	Microsoft Excel 4 For Mac Macro
File extension XLMV	Thunder Mall Video Format
File extension XLMX	Microsoft Excel Macro-enabled Spreadsheet
File extension XLM_	Microsoft Excel 2 For Mac Macro
File extension XLNK	XML Link Format
File extension XLO	Autodesk Inventor Export Journal
File extension XLPF	Microsoft Excel For Mac Setting
File extension XLR	Microsoft Works Spreadsheet Or Chart Format
File extension XLS	Microsoft Excel 97 To 2003 Workbook Format
File extension XLS3	Microsoft Excel 3 For Mac Spreadsheet
File extension XLS4	Microsoft Excel 4 For Mac Spreadsheet
File extension XLS5	Microsoft Excel 5 For Mac Spreadsheet
File extension XLS8	Microsoft Excel 98 For Mac Spreadsheet
File extension XLSB	Microsoft Excel 2007/2010 Binary Workbook Format
File extension XLSENX	Egis Encrypted Excel XLS
File extension XLSHTML	Microsoft Office Excel HTML Document Format
File extension XLSM	Microsoft Excel 2007/2010 Open XML Macro-enabled Workbook Format
File extension XLSMHTML	Microsoft Excel MIME HTML Spreadsheet Format
File extension XLSX	Microsoft Excel 2007, Excel 2010 And Excel 2013 Open XML Workbook Format
File extension XLSXENX	Egis Encrypted Excel XLSX
File extension XLS_	Microsoft Excel For Mac Spreadsheet
File extension XLT	Microsoft Excel 97 To 2003 Workbook Template Format
File extension XLTHTML	Microsoft Office Excel HTML Template Format
File extension XLTM	Microsoft Excel 2007/2010 Open XML Macro-enabled Workbook Template Format
File extension XLTX	Microsoft Excel 2007/2010 Open XML Workbook Template Format
File extension XLV	Microsoft Excel VBA Module Format
File extension XLW	Microsoft Excel Workspace Format
File extension XLW3	Microsoft Excel 3 For Mac Workbook
File extension XLW4	Microsoft Excel 4 For Mac Workbook
File extension XLW5	Microsoft Excel 5 For Mac Workbook
File extension XLW_	Microsoft Excel 2 For Mac Workbook
File extension XLXML	Microsoft Excel XML Worksheet
File extension XLZ	Crossword Power Tools Crossword Library
File extension XM	FastTracker 2 Instrument
File extension XMAP	XMind 2007/2008 Workbook
File extension XMB	Lucas Arts X-Wing Mission Briefing Format
File extension XMC	Lingoes Configuration
File extension XMCD	PTC Mathcad Worksheet Format
File extension XMCDZ	PTC Mathcad Compressed Worksheet Format
File extension XMCT	Mathcad Template Format
File extension XMD	GameJack Virtual CD Or DVD Image Format
File extension XME	GME
File extension XMEF	TextMap Evidence Format
File extension XMF	CDRWin Virtual CD Image Format
File extension XMG	The Longest Journey XMG
File extension XMI	Miles Sound System Extended MIDI Files
File extension XMIND	XMind Workbook Format
File extension XMIT	IBM XMIT Data
File extension XML	XML Document Format
File extension XML-PREV	VirtualBox XML Settings Backup
File extension XMLA	XML For Analysis Source
File extension XMLJET	Eclipse JET XML Template
File extension XMLPER	LeCroy Binary Waveform Format
File extension XMLS	Microsoft Excel 2003 XML
File extension XMLX	Excel Spreadsheet
File extension XMM	3ds Max XML Animation Map Format
File extension XMMAP	MindManager XML Map Format
File extension XMMAS	MindManager XML Theme
File extension XMMAT	MindManager XML Template
File extension XMO	Adobe Authorware Movie Driver
File extension XMOD	Datawatch Monarch Model
File extension XMP	Adobe Extensible Metadata Platform Format
File extension XMPSES	Adobe Premiere Elements
File extension XMPSKIN	XMPlay Skin
File extension XMPZ	Miradi XML Project Format
File extension XMS	Microsoft EXtended Memory Specification
File extension XMT	XMind Workbook Template
File extension XMTA	Microsoft Visual Studio XMTA Document
File extension XMV	Microsoft Xbox Video Format
File extension XMX	AutoCAD External Message Compiled
File extension XMZ	Fasttracker 2 Extended Module Format
File extension XN	Cygnus Ld-scripts
File extension XNB	XNA Game Studio Express XNA Framework Content Pipeline Binary Format
File extension XND	ExNode Download
File extension XNF	Extensible Numerical
File extension XNK	Microsoft Exchange Shortcut Format
File extension XNODE	LabVIEW
File extension XNP	XnView Addon
File extension XNT	QuarkXPress Extension Format
File extension XNV	NVision Layout
File extension XOB	EasyBuilder 8000 Compiled Code
File extension XOF	RenderMorphics Reality Lab 3D Image Format
File extension XOJO_BINARY_MENU	Xojo Binary Menu
File extension XOJO_BINARY_PROJECT	Xojo Binary Project
File extension XOJO_BINARY_WINDOW	Xojo Binary Window
File extension XOJO_MENU	Xojo Menu
File extension XOJO_PROJECT	Xojo Programming Project
File extension XOJO_WINDOW	Xojo Window
File extension XOJO_XML_MENU	Xojo XML Menu
File extension XOJO_XML_WINDOW	Xojo XML Window
File extension XOL	Swiss Map Overlay Format
File extension XOM	Worms 3D Object Format
File extension XOML	Windows Workflow Format
File extension XOP	IGOR Pro Add-on
File extension XOV	RapidForm XOV 3D Inspection/Model
File extension XP	WindowBlinds Temporary Format
File extension XP0	SecretPhotos Puzzle Graphic Image
File extension XP2	XPilot NG
File extension XP3	KiriKiri Package Format
File extension XP4	KiriKiri Package
File extension XPAC	Sonic & Sega All-Stars Racing For PC Game Audio Archive
File extension XPADDERCONTROLLER	Xpadder Controller Layout Format
File extension XPADDERPROFILE	Xpadder Settings
File extension XPB	XPB! Basic Source Code
File extension XPD	XML Pipeline Document Format
File extension XPDL	XPDL Module
File extension XPF	XProtector Project
File extension XPG	Autoplay Media Studio Exported Page
File extension XPGT	EPUB XML Stylesheet Page Template
File extension XPI	Firefox Browser Extension Format
File extension XPJ	Micro Planner X-Pert Project Format
File extension XPK	PSpice Library Format
File extension XPKU	Apple Mac OS X Universal Binary Package
File extension XPL	X-Plane Plug-in Format
File extension XPL2	TerraExplorerPro LOD Parameter
File extension XPM	X11 Pixmap Graphic
File extension XPNG	Portable (Public) Network Graphic Bitmap
File extension XPP	X++ Source Code Format
File extension XPR	PTC Pro/ENGINEER Part Format
File extension XPR3	QuarkXpress 3.0 Mac
File extension XPRJ	Monarch XML Project
File extension XPS	XML Paper Specification Format
File extension XPS~	WindowBlinds Temporary
File extension XPT	Mozilla Firefox Component
File extension XPTIN	Xpswmm Hydrology Data
File extension XPW	Accessible FormNet Fillable Form
File extension XPX	Intercon FormNet
File extension XPY	MarketBrowser
File extension XP~	WindowBlinds Temporary
File extension XQ	XQuery Format
File extension XQL	XML Query Language Format
File extension XQM	XQuery Module
File extension XQT	SuperCalc Macro Spreadsheet Format
File extension XQUERY	XQuery Source Code Format
File extension XQY	XQuery Source Format
File extension XR	Cygnus Ld-scripts
File extension XRC	WxWidgets WxPython Resource
File extension XRD	Core Wars Data
File extension XRDML	PANalytical XRD Measurement Data XML
File extension XREF	IBM AIX Cross Reference
File extension XRF	WordSearch Cross Reference Format
File extension XRFF	Extensible Attribute-Relation File Format
File extension XRL	PowerDesigner Report
File extension XRM-MS	Microsoft Security Certificate
File extension XRNS	Extended Renoise Song Format
File extension XRP	RationalPlan Format
File extension XRS	Dig It! Game
File extension XRX	Expression Encoder Media Profile Settings
File extension XRY	XRY Data Format
File extension XS	Age Of Empires 3 Map AI Generator Format
File extension XS4	XESS Worksheet
File extension XS5	XESS Worksheet
File extension XSB	XACT Sound Bank
File extension XSC	Microsoft Visual Studio XSC Format
File extension XSD	XML Schema Description Format
File extension XSF	Microsoft Office InfoPath Format
File extension XSI	SOFTIMAGE\|XSI 3D Model
File extension XSIADDON	SOFTIMAGE XSI Add-on Format
File extension XSL	XML Stylesheet Format
File extension XSLIC	XenServer License Format
File extension XSLT	XSL Transform Format
File extension XSM	SimCity Societies Game
File extension XSN	Microsoft Office InfoPath Template Form Format
File extension XSO	Expresso Project
File extension XSP	XBMC Smart Playlist Format
File extension XSPF	XML Shareable Playlist Format
File extension XSQL	Oracle XSQL Servlet Server Side
File extension XSR	FabTrol MRP
File extension XSS	XML Stylesheet Format
File extension XSSLOG	Microsoft SharePoint WorkSpace Groove Log
File extension XSSR	Microsoft SharePoint WorkSpace Groove
File extension XST	Microsoft Outlook Personal Folders Format
File extension XSTB	TextBridge
File extension XSTK	XStarter Task
File extension XSU	Fortran 77 Library
File extension XSVF	Xilinx Serial Vector Format
File extension XSX	Microsoft Visual Studio XML Schema Layout Format
File extension XT	FastTracker Music Track Format
File extension XTC	XTrkCAD Project
File extension XTD	XML Type Definition
File extension XTERME	Winstep Extreme Theme
File extension XTF	EXtended Triton Format
File extension XTG	QuarkXpress Tags Format
File extension XTIC	ActivInspire Ticker
File extension XTL	Vietcong Game Data Format
File extension XTM	CmapTools Exported Topic Map Format
File extension XTML	XML4web Virtual HTML Document
File extension XTMP	Avid Xpress Pro Template
File extension XTND	Adobe Acrobat For Mac Plug-In
File extension XTODVD	ConvertXtoDVD Project
File extension XTP	XTreeGold Overlay
File extension XTRA	Adobe Director Xtra
File extension XTREME	Winstep Xtreme Theme Pack Format
File extension XTRL	XTND Translator
File extension XTXT	Xtext
File extension XUI	Xbox 360 Skin Format
File extension XUL	Firefox XML User Interface Language Format
File extension XUR	Xbox 360 Compiled Skin Format
File extension XV	Khoros Visualization Bitmap Image
File extension XV0	Lattice XVL Structure Format
File extension XV2	V-XVL Geometry
File extension XV3	P-XVL Geometry Format
File extension XVA	Citrix Xen Virtual Appliance Format
File extension XVCT	VISE XML Project Format
File extension XVG	Grace Document
File extension XVID	XviD Codec
File extension XVL	EXtensible Virtual World Description Language Document
File extension XVM	VMware Console Configuration Format
File extension XVMCONF	World Of Tanks Configuration Format
File extension XVO	RatDVD Internal
File extension XVU	BOClean Database Format
File extension XWB	XACT Wave Bank Format
File extension XWC	Starbreeze Sound
File extension XWD	X Window Window Screen Dump Or Bitmap
File extension XWF	OmniPage Workflow Format
File extension XWI	Star Wars: X-Wing Mission
File extension XWK	Crosstalk Keyboard Mapping Format
File extension XWM	The Elder Scrolls V: Skyrim Music
File extension XWMA	XWMA Audio Compression Format
File extension XWMV	Microsoft Windows Media
File extension XWP	Xerox Writer Document
File extension XWS	Xara Webstyle Format
File extension XX	XXEncoded Format
File extension XXD	Brixx Planner Calendar Format
File extension XXE	XXEncoded Format
File extension XXX	Compucon/Singer PSW Embroidery Design Format
File extension XY	XyWrite Document
File extension XY3	XYWrite III Document
File extension XYP	XY Write III Plus Document
File extension XYS	XYplorer Script Format
File extension XYW	XYWrite For Windows 3x/4.0 Document
File extension XYZ	Molecule Specification Format
File extension XYZE	Radiance Map
File extension XYZI	3rdTech Scanner
File extension XYZRGB	3rdTech XYZ RGB Graphic
File extension XYZV	Celestia Sampled Trajectory Format
File extension XZ	XZ Utils Compressed Archive
File extension XZFX	ZipLogix ZipForm Format
File extension XZM	Slackware Linux Package
File extension X_B	Parasolid Document Format
File extension X_T	Parasolid File Format

File extensions in alphabetical order: X