.WP3 | Microsoft Corporation | Video Files | Microsoft Photo Story Project File | Photo Story | Microsoft Corporation |
.WPD | Corel | Text Files | WordPerfect Document | Microsoft Word | Microsoft Corporation |
.WPF | Corel | Data Files | WordPerfect Form | Microsoft Word | Microsoft Corporation |
.WPG | Corel | Vector Image Files | WordPerfect Graphic File | ACD Systems Canvas | Microsoft Corporation |
.WPJ | Watcom International Corporation | Uncommon Files | Watcom C/C++ Project | Microsoft Works | Microsoft Corporation |
.WPK | Corel | Executable Files | WordPerfect Macro | Microsoft Windows with USB Connection | Microsoft Corporation |
.WPL | Microsoft Corporation | Video Files | Windows Media Player Playlist | Microsoft Windows Media Player | Microsoft Corporation |
.WPS | Kingsoft | Text Files | Kingsoft Writer Document | Microsoft Works | Microsoft Corporation |
.WPT | Corel | Text Files | WordPerfect Template | Microsoft Works | Microsoft Corporation |
.WPX | Microsoft Corporation | System Files | Printer Description File 2 | Microsoft Windows | Microsoft Corporation |
.WQL | Microsoft Corporation | Data Files | Microsoft Office Data | Microsoft Office | Microsoft Corporation |
.WRI | Microsoft Corporation | Text Files | Microsoft Write Document | Microsoft Write | Microsoft Corporation |
.WRK | Cakewalk, Inc. | Audio Files | Cakewalk Music Project | Microsoft SQL Server | Microsoft Corporation |
.WRT | IBM | Text Files | IBM Writing Assistant Document | MS-DOS | Microsoft Corporation |
.WS | MicroPro International Corp. | Text Files | WordStar Document | Microsoft Wordstar | Microsoft Corporation |
.WS1 | Microsoft Corporation | Uncommon Files | WordStar For Windows 1 File | Microsoft Wordstar | Microsoft Corporation |
.WS2 | MicroPro International Corp. | Text Files | WordStar Document | Microsoft Wordstar | Microsoft Corporation |
.WSC | Open Source | Game Files | WonderSwan Color Game ROM | Microsoft Notepad | Microsoft Corporation |
.WSD | MicroPro International Corp. | Text Files | WordStar Document | Microsoft Wordstar | Microsoft Corporation |
.WSDL | Microsoft Corporation | Web Files | Web Services Description Language File | Microsoft Visual Studio | Microsoft Corporation |
.WSF | Microsoft Corporation | Executable Files | Windows Script File | Microsoft Word | Microsoft Corporation |
.WSH | Microsoft Corporation | Executable Files | Windows Script Host Settings File | Microsoft Notepad | Microsoft Corporation |
.WSP | Microsoft Corporation | Developer Files | SharePoint Solution Package | Microsoft Visual Studio | Microsoft Corporation |
.WSS | Microsoft Corporation | System Files | Microsoft Windows Sound System File | Microsoft Windows | Microsoft Corporation |
.WTL | Microsoft Corporation | Data Files | Windows Test Technologies Logger Results | Windows Hardware Certification Kit | Microsoft Corporation |
.WTMP | Microsoft Corporation | Temporary Files | Microsoft Word For Mac 5 Temporary File | Microsoft Word | Microsoft Corporation |
.WTR | Microsoft Corporation | Data Files | Encarta File | Microsoft Encarta | Microsoft Corporation |
.WTV | Microsoft Corporation | Video Files | Windows Recorded TV Show File | Windows Media Center | Microsoft Corporation |
.WTX | Stefan Hagel | Text Files | Text Document | Microsoft Notepad | Microsoft Corporation |
.WVX | Microsoft Corporation | Video Files | Windows Media Video Redirector | Microsoft Windows Media Player | Microsoft Corporation |
.WWD | Microsoft Corporation | Uncommon Files | Works Wizard File | Microsoft Works | Microsoft Corporation |
.WWL | Microsoft Corporation | Plugin Files | Microsoft Word Add-in File | Microsoft Word | Microsoft Corporation |
.WWP | Microsoft Corporation | Settings Files | Microsoft Works Wizards File | Microsoft Works | Microsoft Corporation |
.WWS | Microsoft Corporation | Settings Files | Microsoft Works Wizards File | Microsoft Works | Microsoft Corporation |
.WX | Open Source | Backup Files | Wanam Xposed Backup File | Microsoft Flight Simulator | Microsoft Corporation |
.WXB | Microsoft Corporation | Uncommon Files | Windows Miscellaneous File | Microsoft Windows | Microsoft Corporation |
.WZS | Microsoft Corporation | Database Files | Microsoft Word Wizard | Microsoft Office | Microsoft Corporation |
.X | Microsoft Corporation | 3D Image Files | DirectX Model File | Microsoft DirectX SDK | Microsoft Corporation |
.X-PNG | The Pixelmator Team | Raster Image Files | Portable Network Graphics | Microsoft Windows Photos | Microsoft Corporation |
.X3D | Microsoft Corporation | 3D Image Files | Compiled Vertex Shader File | Microsoft DirectX SDK | Microsoft Corporation |
.XAML | Microsoft Corporation | Developer Files | Extensible Application Markup Language | Microsoft Notepad | Microsoft Corporation |
.XAMLX | Microsoft Corporation | Text Files | Microsoft Visual Studio XAMLX Document | Microsoft Visual Studio | Microsoft Corporation |
.XAP | Microsoft Corporation | Developer Files | XACT Project | Microsoft XACT | Microsoft Corporation |
.XAR | Magix Software GmbH | Vector Image Files | Xara Xtreme Drawing | Microsoft Excel | Microsoft Corporation |
.XBAP | Microsoft Corporation | Executable Files | XAML Browser Application File | Microsoft Visual Studio | Microsoft Corporation |
.XBF | Microsoft Corporation | Developer Files | XAML Binary File | Microsoft Visual Studio | Microsoft Corporation |
.XBX | Microsoft Corporation | Raster Image Files | Xbox Icon Or Picture | Microsoft XBOX | Microsoft Corporation |
.XCEL | Microsoft Corporation | Spreadsheet Files | Microsoft Excel For Mac Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XCP | Advanced Systems Concepts, Inc. | Text Files | XLNT Script Command | Microsoft XBOX | Microsoft Corporation |
.XDR | Microsoft Corporation | Settings Files | XML-Data Reduced File | Microsoft Notepad | Microsoft Corporation |
.XEE | Microsoft Corporation | Settings Files | Microsoft Expression Encoder Preset | Expression Encoder | Microsoft Corporation |
.XEJ | Microsoft Corporation | Video Files | Expression Encoder Job File | Microsoft Expression Studio | Microsoft Corporation |
.XEL | Microsoft Corporation | Video Files | Expression Encoder Live Encoding File | Microsoft Expression Studio | Microsoft Corporation |
.XESC | Microsoft Corporation | Graphic Files | Microsoft Expression Encoder Screen Capture Data | Microsoft Windows Media Player | Microsoft Corporation |
.XEX | Microsoft Corporation | Game Files | Xbox 360 Executable File | Microsoft XBOX | Microsoft Corporation |
.XFDL | IBM | Web Files | Extensible Forms Description Language | Microsoft Notepad | Microsoft Corporation |
.XGS | Microsoft Corporation | Settings Files | XACT Global Settings File | Microsoft XACT | Microsoft Corporation |
.XHT | Open Source | Web Files | XHTML File | Microsoft Edge | Microsoft Corporation |
.XHTM | Opera Software | Web Files | Extensible Hypertext Markup Language Document | Internet Explorer | Microsoft Corporation |
.XHTML | Opera Software | Web Files | Extensible Hypertext Markup Language Document | Internet Explorer | Microsoft Corporation |
.XIP | Apple | Compressed Files | MacOS Signed Archive | Microsoft XBOX | Microsoft Corporation |
.XIX | Microsoft Corporation | Data Files | IIS NNTP Subject Lists | Microsoft Internet Information Services (IIS) | Microsoft Corporation |
.XL | Microsoft Corporation | Spreadsheet Files | Excel Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XLA | Microsoft Corporation | Plugin Files | Excel Add-In File | Microsoft Excel | Microsoft Corporation |
.XLAM | Microsoft Corporation | Plugin Files | Excel Open XML Macro-Enabled Add-In | Microsoft Excel | Microsoft Corporation |
.XLB | Microsoft Corporation | Settings Files | Excel Toolbars File | Microsoft Excel | Microsoft Corporation |
.XLC | Microsoft Corporation | Data Files | Excel Chart | Microsoft Excel | Microsoft Corporation |
.XLD | Microsoft Corporation | Database Files | Excel Database File | Microsoft Excel | Microsoft Corporation |
.XLK | Microsoft Corporation | Backup Files | Excel Backup File | Microsoft Excel | Microsoft Corporation |
.XLL | Microsoft Corporation | Plugin Files | Excel Add-In File | Microsoft Excel | Microsoft Corporation |
.XLM | Microsoft Corporation | Executable Files | Excel Macro | Microsoft Excel | Microsoft Corporation |
.XLR | Microsoft Corporation | Spreadsheet Files | Microsoft Works Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XLS | Microsoft Corporation | Spreadsheet Files | Microsoft Excel 97 To 2003 Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XLSB | Microsoft Corporation | Spreadsheet Files | Excel Binary Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XLSHTML | Microsoft Corporation | Spreadsheet Files | Microsoft Excel HTML Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XLSM | Microsoft Corporation | Spreadsheet Files | Microsoft Excel Open XML Macro-Enabled Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XLSMHTML | Microsoft Corporation | Spreadsheet Files | Microsoft Excel MIME HTML Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XLSX | Microsoft Corporation | Spreadsheet Files | Microsoft Excel Open XML Spreadsheet | Microsoft Excel | Microsoft Corporation |
.XLT | Microsoft Corporation | Data Files | Excel Template File | Microsoft Excel | Microsoft Corporation |
.XLTHTML | Microsoft Corporation | Spreadsheet Files | Microsoft Excel HTML Spreadsheet Template | Microsoft Excel | Microsoft Corporation |
.XLTM | Microsoft Corporation | Spreadsheet Files | Excel Open XML Macro-Enabled Spreadsheet Template | Microsoft Excel | Microsoft Corporation |
.XLTX | Microsoft Corporation | Spreadsheet Files | Excel Open XML Spreadsheet Template | Microsoft Excel | Microsoft Corporation |
.XLV | Microsoft Corporation | Spreadsheet Files | Excel Visual Basic Module File | Microsoft Excel | Microsoft Corporation |
.XLW | Microsoft Corporation | Data Files | Microsoft Excel Workspace | Microsoft Excel | Microsoft Corporation |
.XML | Wattle Software | Data Files | XML File | Microsoft Word | Microsoft Corporation |
.XMP | Adobe Systems Incorporated | Uncommon Files | Extensible Metadata Platform File | Microsoft Notepad | Microsoft Corporation |
.XMS | Alexander Gross | Settings Files | Music Studio Project | MS-DOS | Microsoft Corporation |
.XNB | Microsoft Corporation | Game Files | XNA Game Studio Binary Package | Microsoft XNA Game Studio | Microsoft Corporation |
.XNK | Microsoft Corporation | Uncommon Files | Microsoft Exchange Public Folder Shortcut | Microsoft Exchange Server | Microsoft Corporation |
.XOML | Microsoft Corporation | Text Files | Microsoft Visual Studio XOML File | Microsoft Visual Studio | Microsoft Corporation |
.XPM | XnSoft | Raster Image Files | X11 Pixmap Graphic | ACD Systems Canvas | Microsoft Corporation |
.XPO | Microsoft Corporation | Data Files | Microsoft Dynamics AX Export File | Microsoft Dynamics AX | Microsoft Corporation |
.XPP | Microsoft Corporation | Developer Files | X++ Source Code File | Microsoft Dynamics AX | Microsoft Corporation |
.XPR | Parametric Technology Corporation | 3D Image Files | Pro/ENGINEER Part Instance Accelerator File | Microsoft Expression Studio | Microsoft Corporation |
.XPROJ | Microsoft Corporation | Text Files | Microsoft Visual Studio ASP.NET Project | Microsoft Visual Studio | Microsoft Corporation |
.XPS | Microsoft Corporation | Page Layout Files | Microsoft XPS (XML Paper Specification) File | Microsoft XPS Viewer | Microsoft Corporation |
.XQL | Open Source | Developer Files | XML Query Language File | Microsoft Notepad | Microsoft Corporation |
.XRM-MS | Microsoft Corporation | System Files | Microsoft Security Certificate | Microsoft Windows | Microsoft Corporation |
.XRX | Microsoft Corporation | Settings Files | Expression Encoder Media Profile Settings | Expression Encoder | Microsoft Corporation |
.XSB | Microsoft Corporation | Audio Files | XACT Sound Bank | Microsoft XACT | Microsoft Corporation |