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