.SPR | Valve | Raster Image Files | Half-Life Sprite File | Microsoft Visual FoxPro | Microsoft Corporation |
.SPS | IBM | Data Files | SPSS Program File | Microsoft Notepad | Microsoft Corporation |
.SPX | Xiph.Org | Audio Files | Ogg Vorbis Speex File | Microsoft Windows Media Player | Microsoft Corporation |
.SQL | Various Developers | Database Files | Structured Query Language Data File | Microsoft Notepad | Microsoft Corporation |
.SQLPROJ | Microsoft Corporation | Developer Files | Microsoft Visual Studio SQL Server Project | Microsoft Visual Studio | Microsoft Corporation |
.SQM | Microsoft Corporation | System Files | Service Quality Monitoring File | Microsoft Windows | Microsoft Corporation |
.SQR | Oracle Corporation | Data Files | SQL Program File | Microsoft SQL Server | Microsoft Corporation |
.SRC | Unknown Developer | Developer Files | Source Code File | Microsoft Notepad | Microsoft Corporation |
.SRE | Microsoft Corporation | Data Files | Windows CE 5.0 File | Microsoft Windows CE Embedded | Microsoft Corporation |
.SRF | NewTek | 3D Image Files | LightWave Surface File | Microsoft Visual Studio | Microsoft Corporation |
.SRG | Ketron | Uncommon Files | Ketron Single Registration File | Microsoft PowerPoint | Microsoft Corporation |
.SRQ | Microsoft Corporation | Data Files | Microsoft Windows Server Unprocessed Request File | Microsoft Windows Server 2016 | Microsoft Corporation |
.SRS | Microsoft Corporation | Settings Files | Outlook Send/Receive Settings File | Microsoft Outlook | Microsoft Corporation |
.SRT | SourceForge | Video Files | SubRip Subtitle File | Microsoft Windows Media Player | Microsoft Corporation |
.SRW | Samsung Electronics | Camera Raw Files | Samsung RAW Image | Microsoft Windows Photos | Microsoft Corporation |
.SRX | Sublime HQ Pty Ltd | Data Files | SPARQL Query Results XML Format Result | Microsoft Notepad | Microsoft Corporation |
.SS | Open Source | Developer Files | SilverStripe Source Code File | Microsoft Notepad | Microsoft Corporation |
.SSC | Microsoft Corporation | Developer Files | SourceSafe Status File | Microsoft Visual Studio | Microsoft Corporation |
.SSF | Unknown Developer | Video Files | Structured Subtitle Format File | Microsoft Notepad | Microsoft Corporation |
.SSH | Microsoft Corporation | Web Files | Microsoft Internet Explorer Style Sheet | Internet Explorer | Microsoft Corporation |
.SSQ | Microsoft Corporation | Developer Files | ODBC Script File | Microsoft ODBC Data Source Administrator | Microsoft Corporation |
.SST | Microsoft Corporation | Uncommon Files | Serialized Certificate Store File | Certificate Manager Tool | Microsoft Corporation |
.SSU | Microsoft Corporation | Data Files | SMS Hierarchy Manager Site Update | Microsoft Systems Management Server | Microsoft Corporation |
.STATE | Microsoft Corporation | Data Files | Windows Photo Gallery User Data | Windows Photo Gallery | Microsoft Corporation |
.STC | Adobe Systems Incorporated | Web Files | Contribute Connection Key File | Microsoft Notepad | Microsoft Corporation |
.STE | Adobe Systems Incorporated | Settings Files | Dreamweaver Site Settings File | Microsoft Notepad | Microsoft Corporation |
.STF | Microsoft Corporation | Data Files | Exchange 2000 Server Temporary File | Microsoft Exchange Server | Microsoft Corporation |
.STG | Microsoft Corporation | Backup Files | ActiveSync Backup File | Microsoft ActiveSync | Microsoft Corporation |
.STL | 3D Systems | CAD Files | Stereolithography File | Microsoft IIS | Microsoft Corporation |
.STM | Microsoft Corporation | Data Files | Exchange Streaming Media File | Microsoft Exchange Server | Microsoft Corporation |
.STN | ON1, Inc. | Vector Image Files | Genuine Fractals Image | Flight Simulator X | Microsoft Corporation |
.STP | Unknown Developer | 3D Image Files | STEP 3D CAD File | Microsoft SharePoint | Microsoft Corporation |
.STR | dBase, LLC | Data Files | dBASE Structure List Object File | Microsoft Windows | Microsoft Corporation |
.STS | DuoS DSEMU | Game Files | DuoS DSEMU Saved State File | Microsoft Visual C++ | Microsoft Corporation |
.STT | Microsoft Corporation | GIS Files | Streets & Trips Map Template | Microsoft AutoRoute | Microsoft Corporation |
.STVPROJ | Microsoft Corporation | Data Files | Microsoft Visual Studio Data File | Microsoft Visual Studio | Microsoft Corporation |
.STY | Jørgen Sørensen / Jososoft | Audio Files | Yamaha/Korg Keyboard Style | Microsoft DirectX | Microsoft Corporation |
.SUO | Microsoft Corporation | Developer Files | Visual Studio Solution User Options File | Microsoft Visual Studio | Microsoft Corporation |
.SVC | Microsoft Corporation | Web Files | WCF Web Service File | Microsoft Internet Information Services (IIS) | Microsoft Corporation |
.SVCLOG | Microsoft Corporation | Data Files | Microsoft Visual Studio Diagnostics Data | Microsoft Visual Studio | Microsoft Corporation |
.SVG | Nintendo | Game Files | Saved Game File | Microsoft Visio | Microsoft Corporation |
.SVH | IEEE Xplore | Developer Files | SystemVerilog Source Code Header File | Microsoft Notepad | Microsoft Corporation |
.SVS | Nintendo | Game Files | Game Boy Advance Saved State File | Microsoft Word | Microsoft Corporation |
.SVX | The Survex Project | GIS Files | Survex Cavern Data File | Microsoft Notepad | Microsoft Corporation |
.SWAP | Microsoft Corporation | System Files | Swap File | Microsoft Windows | Microsoft Corporation |
.SWM | Microsoft Corporation | Disk Image Files | Split Windows Imaging Format File | Microsoft ImageX | Microsoft Corporation |
.SWP | Microsoft Corporation | System Files | Swap File | Microsoft Windows | Microsoft Corporation |
.SWV | Microsoft Corporation | Game Files | Microsoft Sidewinder Game Voice Settings File | SideWinder Game Voice Utility | Microsoft Corporation |
.SY3 | Harvard Graphics | Data Files | Harvard Graphics Symbol File | ACD Systems Canvas | Microsoft Corporation |
.SYL | Microsoft Corporation | Data Files | Symbolic Link Spreadsheet | Microsoft Excel | Microsoft Corporation |
.SYLK | Microsoft Corporation | Data Files | Microsoft Symbolic Link File | Microsoft Excel | Microsoft Corporation |
.SYNC | Apple | Data Files | Apple ColorSync File | Microsoft Visual Studio | Microsoft Corporation |
.SYS | Microsoft Corporation | System Files | Windows System File | Microsoft Windows | Microsoft Corporation |
.SYSTEM | Open Source | Game Files | Vega Strike Virtual System File | Microsoft Notepad | Microsoft Corporation |
.SY_ | Microsoft Corporation | Compressed Files | Compressed SYS File | Microsoft Expand | Microsoft Corporation |
.T | Holt Software | Developer Files | Turing Source Code File | Microsoft Notepad | Microsoft Corporation |
.T2 | RM Education | Data Files | Textease 2000 File | Microsoft Windows | Microsoft Corporation |
.T3D | Epic Games | 3D Image Files | Unreal Engine 3D Object File | Microsoft Windows Media Player | Microsoft Corporation |
.TAB | Microsoft Corporation | Text Files | Tab Separated Data File | Microsoft Excel | Microsoft Corporation |
.TBB | Microsoft Corporation | Settings Files | Microsoft Office Toolbar Button | Microsoft Office | Microsoft Corporation |
.TBK | SumTotal Systems | Data Files | ToolBook Project File | Microsoft Visual FoxPro | Microsoft Corporation |
.TCM | IMSI/Design, LLC | CAD Files | TurboCAD Mac Drawing | Microsoft Notepad | Microsoft Corporation |
.TDX | D-TEG Security Co. | Video Files | D-TEG CCTV Video Information File | Microsoft Visual FoxPro | Microsoft Corporation |
.TESTRUNCONFIG | Microsoft Corporation | Settings Files | Microsoft Visual Studio Test Run Configuration File | Microsoft Visual Studio | Microsoft Corporation |
.TESTSETTINGS | Microsoft Corporation | Developer Files | Visual Studio Test Settings File | Microsoft Visual Studio | Microsoft Corporation |
.TEXT | Sublime HQ Pty Ltd | Text Files | Plain Text File | Microsoft Notepad | Microsoft Corporation |
.TGA | Avid Technology | Raster Image Files | Targa Graphic | ACD Systems Canvas | Microsoft Corporation |
.TGD | Planetside Software | Data Files | Terragen Project File | Microsoft Notepad | Microsoft Corporation |
.TGML | Unknown Developer | Developer Files | Tecumseh Group Markup Language Source Code | Microsoft Notepad | Microsoft Corporation |
.THE | Microsoft Corporation | Settings Files | Microsoft Plus! Theme File | Microsoft Plus! | Microsoft Corporation |
.THEME | Microsoft Corporation | System Files | Microsoft Plus! Desktop Theme | Microsoft Windows | Microsoft Corporation |
.THEMEPACK | Microsoft Corporation | Settings Files | Microsoft Windows 7 Theme Pack | Microsoft Windows 7 | Microsoft Corporation |
.THM | Sony | Uncommon Files | Sony Ericsson Mobile Phone Theme File | Microsoft Windows Picture and Fax Viewer | Microsoft Corporation |
.THMX | Microsoft Corporation | Settings Files | Microsoft Office 2007 Theme File | Microsoft Excel | Microsoft Corporation |
.TIF | XnSoft | Raster Image Files | Tagged Image File Format | Microsoft Windows Photos | Microsoft Corporation |
.TIFF | XnSoft | Raster Image Files | Tagged Image File Format | Microsoft Windows Photos | Microsoft Corporation |
.TIM | Sierra Entertainment | Game Files | The Incredible Machine Level | Microsoft Windows Photos | Microsoft Corporation |
.TIVO | TiVo Corporation | Video Files | TiVo Video File | Windows Media Center | Microsoft Corporation |
.TLB | Various Developers | Text Files | VAX Text Library | Microsoft Excel | Microsoft Corporation |
.TLD | The Eclipse Foundation | Developer Files | Tag Library Descriptor File | Microsoft XML Notepad | Microsoft Corporation |
.TLH | Microsoft Corporation | Developer Files | Typelib Generated C/C++ Header File | Microsoft Visual Studio | Microsoft Corporation |
.TLI | Microsoft Corporation | Developer Files | Typelib Generated C/C++ Inline File | Microsoft C/C++ | Microsoft Corporation |
.TMP | Mozilla | Backup Files | General Temporary File | Internet Explorer | Microsoft Corporation |
.TMPL | Xfire, Inc. | Uncommon Files | Xfire User Interface Template | Visual Studio Code | Microsoft Corporation |
.TNEF | Microsoft Corporation | Uncommon Files | Transport Neutral Encapsulation Format | Microsoft Outlook Express | Microsoft Corporation |
.TOPC | 3d-scape Limited | Data Files | TopicCrunch Project File | Microsoft Notepad | Microsoft Corporation |
.TPL | Unknown Developer | Text Files | Document Template | ACD Systems Canvas | Microsoft Corporation |
.TRC | Microsoft Corporation | Database Files | SQL Server Trace File | Microsoft SQL Server | Microsoft Corporation |
.TRI | Singular Inversions | 3D Image Files | FaceGen Polygonal Model File | Microsoft Notepad | Microsoft Corporation |
.TRN | Microsoft Corporation | Backup Files | SQL Server Transaction Log Backup File | Microsoft SQL Server | Microsoft Corporation |
.TRX | Microsoft Corporation | Developer Files | Visual Studio Test Results File | Microsoft Visual Studio | Microsoft Corporation |
.TRY | Microsoft Corporation | Uncommon Files | SCCM 2012 R2 Despoolr.box | Microsoft system center configuration manager | Microsoft Corporation |
.TS | Various Developers | Video Files | Video Transport Stream File | Microsoft Visual Studio | Microsoft Corporation |
.TSK | Microsoft Corporation | Settings Files | Pocket PC Skin | Microsoft ActiveSync | Microsoft Corporation |
.TSP | Inmatrix Media Solutions | Video Files | Digital TV DVR Recording | Microsoft Windows | Microsoft Corporation |
.TSQ | Microsoft Corporation | Developer Files | ODBC Script File | Microsoft ODBC Data Source Administrator | Microsoft Corporation |
.TSV | Unknown Developer | Data Files | Tab Separated Values File | Microsoft Excel | Microsoft Corporation |
.TT | Microsoft Corporation | Developer Files | Visual Studio Text Template | Microsoft Visual Studio | Microsoft Corporation |
.TT2 | Microsoft Corporation | Temporary Files | Microsoft Office 2013 Installation | Microsoft Office | Microsoft Corporation |
.TTA | True Audio | Audio Files | True Audio File | Microsoft Windows Media Player | Microsoft Corporation |