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File extensionDeveloper/ProducerFile description
X file extensionN/ALex Language Source Code
X-PNG file extensionBoris EyrichPortable (Public) Network Graphic Bitmap
X01 file extensionCorel CorporationCorel Paradox Secondary Index
X02 file extensionCorel CorporationCorel Paradox Secondary Index
X03 file extensionCorel CorporationCorel Paradox Secondary Index
X04 file extensionCorel CorporationCorel Paradox Secondary Index
X05 file extensionCorel CorporationCorel Paradox Secondary Index
X06 file extensionCorel CorporationCorel Paradox Secondary Index
X07 file extensionCorel CorporationCorel Paradox Secondary Index
X08 file extensionCorel CorporationCorel Paradox Secondary Index
X09 file extensionCorel CorporationCorel Paradox Secondary Index
X1 file extensionX1 Technologies, Inc.X1 Desktop Search Saved Search
X10 file extensionX.Org FoundationX Window Bitmap Dump
X11 file extensionX.Org FoundationX Window System Bitmap Image
X13 file extensionDarxabreHooligans Game Archive
X20 file extensionJeffrey C Johnson (XTree Company)XTree Gold For Dos Help
X32 file extensionAdobe SystemsAdobe Xtra Format
X3A file extensionN/AMOTIF XF
X3D file extensionMAGIXX3D Format
X3DB file extensionWeb3D ConsortiumX3D Binary Format
X3DV file extensionWeb3D ConsortiumWeb3D X3D Graphics Image
X3F file extensionSIGMASigma Camera RAW Picture Format
X3G file extensionMakerBot Industries, LLCMakerBot MakerWare Document
X40 file extensionJeffrey C Johnson (XTree Company)XtreeGold Dos Help
X4K file extensionOptimal PerformanceXML4King Configuration Format
X50 file extensionJeffrey C Johnson (XTree Company)XTreeGold Dos Help
X60 file extensionJeffrey C Johnson (XTree Company)Xtree Gold For Dos Help
X64 file extensionN/ACommodore 64 Emulator Disk Image
X70 file extensionJeffrey C Johnson (XTree Company)XTree Gold For Dos Help
X80 file extensionJeffrey C Johnson (XTree Company)Xtree Gold DOS Help
X90 file extensionJeffrey C Johnson (XTree Company)XTree Gold For Dos Help
XA file extensionElectronic ArtsThe Sims Extensive Audio Format
XA0 file extensionJeffrey C Johnson (XTree Company)Xtree Gold Dos Help
XAB file extensionMicrosoft CorporationMicrosoft Outlook Express Address Book
XAC file extensionElectronic Arts, Inc.SimCity Societies Game
XAD file extensionN/AEXotic ADlib Sound Format
XADD file extensionMicrosoftExpression Web Add-in
XADML file extensionCloanto Italia srlAmiga Forever XADML
XAF file extensionAutodeskXml Compatible Animation Format
XAIML file extensionDevyn Collier JohnsonXAIML Database Format
XAML file extensionMicrosoftXAML Format
XAMLX file extensionMicrosoftVisual Studio Workflow Service Format
XAN file extensionTeam17 SoftwareWorms 3D Map Format
XAP file extensionMicrosoftMicrosoft Silverlight Application Package Format
XAPPL file extensionSpoonVirtual Application Studio XML Application Configuration Format
XAR file extensionMAGIXXara Vector Drawing Format
XARC file extensionFuncomThe Longest Journey Audio
XAS file extensionParametric TechnologyPTC Pro/Engineer Assembly Format
XAV file extensionFinal Draft, Inc.Final Draft AV Document
XAVC file extensionN/ASony XAVC Video Format
XB0 file extensionJeffrey C Johnson (XTree Company)Xtree Gold DOS Help
XBA file extensionOracleOpenOffice.org Basic Module Format
XBAP file extensionMicrosoftXAML Browser Application Format
XBB file extensionDVIPDFMx Project TeamDVIPDFMx Output
XBC file extensionSMART TechnologiesSMART Notebook Format
XBD file extensionFuji Xerox Co., Ltd.Fuji Xerox Docuworks
XBDOC file extensionXiosisXiosis Scribe Document
XBE file extensionMicrosoftXbox Executable Format
XBEL file extensionPython XML SIGXBEL Bookmarks Format
XBF file extensionElectronic Arts, Inc.Emperor Battle For Dune
XBK file extensionSMART TechnologiesSMART Notebook Format
XBL file extensionMozillaExtensible Binding Language Format
XBLR file extensionN/AOutput Raw XBRL
XBM file extensionN/AX Windows System Bitmap Image
XBMML file extensionN/ABraille Music Score
XBMP file extensionMidway Home Entertainment Inc.Area 51 Game
XBN file extensionHyperG/Smuggl0rXnick Nick Backup
XBPLATE file extensionXiosisXiosis Scribe Template
XBRL file extensionN/AExtensible Business Reporting Language
XBSAV file extensionElectronic ArtsMass Effect 2 For Xbox Saved Game Format
XBT file extensionSMART TechnologiesSMART Notebook Template Format
XBX file extensionMicrosoft CorporationXbox Icon Or Picture
XC0 file extensionJeffrey C Johnson (XTree Company)Xtree Gold Dos Help
XC3 file extensionCast3D project teamCast3D 3D Scene
XCAPPDATA file extensionAppleApple Xcode Application Data Format
XCARCHIVE file extensionAppleXcode Archive
XCCONFIG file extensionApple, Inc.Apple Xcode Configuration Settings
XCDATAMODEL file extensionAppleXcode Core Data Model Format
XCDATAMODELD file extensionAppleXcode Core Data Model Format
XCEL file extensionMicrosoft CorporationMicrosoft Excel For Mac Spreadsheet
XCF file extensionGIMPGIMP XCF Bitmap Image Format
XCH file extensionLink-Assistant.comLinkAssistant Project Settings
XCI file extensionAdobe Systems IncorporatedAdobe Reader Font Mapping
XCL file extensionJeffrey C Johnson (XTree Company)XTree For Windows Script
XCM file extensionIHMCCmapTools Exported Concept Map
XCO file extensionXilinx, Inc.Xilinx CORE Generator Log
XCODE file extensionN/AXcode Development Project Format
XCODEPLUGIN file extensionApple, Inc.Apple Xcode Extension
XCODEPROJ file extensionN/AXCode Project Format
XCOF file extensionApple, Inc.Mac OS Object Library
XCON file extensionAnkit MalhotraConceal Encrypted Data
XCORPUS file extensionUniversity of OxfordXaira Corpora
XCP file extensionAdvanced Systems Concepts, Inc.XLNT Script Command
XCPLUGIN file extensionApple, Inc.Apple Xcode Extension
XCPLUGINDATA file extensionApple, Inc.Xcode Plug-in Data
XCR file extensionEnlight Software. Ltd.Warlords Battlecry Game
XCSCHEME file extensionApple, Inc.Apple Xcode Scheme
XCSL file extensionTechnicolorCineStyle Color Correction Settings Format
XCSNAPSHOTS file extensionAppleXcode Snapshot
XCT file extensionN/AXVI32 Conversion
XCTL file extensionNational Instruments CorporationLabVIEW XControls
XCU file extensionOpenOffice.orgOpenOffice.org Extension Control Format
XCUSERSTATE file extensionApple, Inc.Xcode
XCWORKSPACE file extensionAppleXcode Workspace Format
XD0 file extensionJeffrey C Johnson (XTree Company)XtreeGold Dos Help
XDA file extensionSencha Inc.Sencha Architect Project
XDB file extensionSymantecNorton Antivirus Update Format
XDC file extensionAdobe Systems IncorporatedAdobe Acrobat Printer Description
XDF file extensionIBMExtended Disk Format Image
XDFL file extensionXDFLengine TeamXDFL Configuration
XDI file extensionWinArchiver ComputingWinArchiver Compressed ISO Image Format
XDL file extensionN/AMS SQL Server XML Schema Format
XDO file extensionOracle CorporationOracle BI Publisher Resource Tracking
XDOC file extensionN/AQuarkXPress 3.0 Document
XDOCLET file extensionRed Hat, Inc.JBoss XDoclet Reference
XDP file extensionN/AAcrobat XML Data Package Format
XDR file extensionMicrosoftXML Data Reduced Format
XDS file extensionInvisionsoftNintendo DS Game Maker Project Format
XDT file extensionOlivier F5MZNWin-Test Extra Data
XDU file extensionN/ABackdoor.Win32.PcClient.xdu
XDV file extensionN/AXeTeX
XDW file extensionFuji XeroxDocuWorks Document Format
XE0 file extensionJeffrey C Johnson (XTree Company)XtreeGold Dos Help
XEF file extensionN/AX-Genics EManager Form Data Format
XEJ file extensionMicrosoftMicrosoft Expression Encoder Job Format
XEL file extensionMicrosoftMicrosoft Expression Encoder 3.0 Live Jobs Format
XEM file extensionN/AX-Genics EManager Metered Units
XEN file extensionActivisionActivision Guitar Hero 3 Data Format
XENSEARCH file extensionCitrixXenCenter Saved Search Format
XEO file extensionSignwave UKSignwave Auto-Illustrator Extension
XEP file extensionN/AEManager File Packing Definition
XEQ file extensionThe Sage Group plcSage MAS 90 Data
XER file extensionOraclePrimavera Project Management Propriety Exchange Format
XES file extensionN/AX-Genics EManager Skins Definition
XESC file extensionMicrosoftMicrosoft Expression Encoder Screen Capture Format
XET file extensionN/AX-Genics EManager Process Definition
XEV file extensionN/AX-Genics EManager Auto-update Format
XEVGENXML file extensionAdobe Systems IncorporatedAdobe Dreamweaver
XEX file extensionMicrosoftXbox 360 Executable Format
XEZ file extensionN/AX-Genics EManager Template Package
XFA file extensionOneCNC LLCOneCncXR CAD
XFBIN file extensionCyberConnect2Naruto Shippuden: Ultimate Ninja Storm 2
XFC file extensionBlacksun SoftwareX-Fonter Font Collection
XFD file extensionUWIAdobe XFDL Format XML Form Format
XFDF file extensionAdobe SystemsAdobe Acrobat Forms Document
XFDL file extensionUWIXFDL Format
XFF file extensionMartin HaluzaXFRX Database Output
XFI file extensionxICE.NETXICE Desktop Encrypted
XFL file extensionAdobe SystemsAdobe Flash Exchange Format
XFM file extensionNuance Communications, Inc.OmniForm XML
XFN file extensionN/ACorel Ventura Printer Font
XFO file extensionN/AXSL-FO Formatted Form
XFP file extensionMicrosoft CorporationMicrosoft SharePoint Extending Form Library Properties
XFR file extensionTIBCO SoftwareIProcess Process Definition Format
XFS file extensioneRacerERacer Sound Format
XFT file extensionN/AAdobe Form Designer Form
XFZ file extensionDeclan SoftwareFrench FlashCards Vocabulary
XG0 file extensionCorel CorporationCorel Paradox Secondary Index
XG1 file extensionCorel CorporationCorel Paradox Secondary Index
XG2 file extensionCorel CorporationCorel Paradox Secondary Index
XG3 file extensionCorel CorporationCorel Paradox Secondary Index
XG4 file extensionCorel CorporationCorel Paradox Secondary Index
XG5 file extensionCorel CorporationCorel Paradox Secondary Index
XGA file extensionImagine SportsDiamond Mind Baseball Game Account Information
XGD file extensionMicrosoft CorporationXbox 360 Game Disc Layout
XGL file extensionN/AXGL 3D CAD Model
XGLL file extensionAFMG Technologies GmbHEASE SpeakerLab Text
XGML file extensionN/AGraph Modeling Language XML Format
XGMML file extensionN/AXGMML Graph Format
XGO file extensionGeoConcept SAGeoConcept Add-on
XGP file extensionXGPXfire Profile Patcher Game List Format
XGS file extension