S File Extensions
Browse file types with extensions beginning with S.
| Extension | File Type | Popularity |
|---|---|---|
| .S | Source Code File | 3.9 |
| .S00 | ZipSplitter Part 1 File | 4.1 |
| .S01 | ZipSplitter Part 2 File | 3.4 |
| .S02 | ZipSplitter Part 3 File | 3.5 |
| .S19 | Motorola S19 File Record | 3.8 |
| .S2ML | StarCraft 2 Map Localization File | 4.0 |
| .S2MV | StarCraft 2 Map Preview File | 3.3 |
| .S2Z | Heroes of Newerth Game Data File | 4.0 |
| .S3I | Scream Tracker 3 Instrument | 3.7 |
| .S3M | ScreamTracker 3 Module | 3.8 |
| .S7Z | Mac OS X 7-Zip File | 4.0 |
| .S85 | Sabre Airline Solutions Chart | 2.0 |
| .SAB | ACIS SAB Model | 3.5 |
| .SAD | Black & White Audio File | 3.8 |
| .SAF | Street Atlas USA Map File | 3.9 |
| .SAFARIEXTZ | Apple Safari Extension | 3.8 |
| .SAFE | SIGLock Encrypted File | 3.8 |
| .SAFETEXT | SafeText File | 2.9 |
| .SAH | SETI@home Data File | 3.0 |
| .SAI | PaintTool SAI Image | 4.0 |
| .SAMI | Grand Theft Auto San Andres Mod Installer File | 4.4 |
| .SAP | Atari SAP Music File | 2.9 |
| .SAR | Sibelius Arrange Style | 3.0 |
| .SAR | SAPCAR Archive | 3.2 |
| .SAS | SAS Program File | 3.5 |
| .SAS7BDAT | SAS Dataset File | 3.0 |
| .SAT | ACIS SAT 3D Model | 3.8 |
| .SAV | Video Game Save File | 4.0 |
| .SAV | Nintendo DS Save File | 4.0 |
| .SAV | SPSS Data File | 3.5 |
| .SAV | Mass Effect 3 Saved Game | 3.6 |
| .SAVEDDECK | Nokia Saved Web Page | 2.0 |
| .SAVEDSEARCH | Spotlight Saved Search | 3.7 |
| .SAVER | Mac OS X Screen Saver | 3.4 |
| .SB | Scratch Project File | 4.3 |
| .SB2 | Scratch 2.0 Project File | 4.3 |
| .SB3 | Scratch 3.0 Project | 4.3 |
| .SBC | Office Accounting Company Shortcut File | 2.2 |
| .SBD | Office Accounting Company Data File | 4.3 |
| .SBF | Android System File | 3.7 |
| .SBGF | Grapher Settings File | 3.0 |
| .SBI | Sound Blaster Instrument | 3.7 |
| .SBK | SWiSH Project Backup File | 3.5 |
| .SBK | Scrapbook Factory File | 2.9 |
| .SBN | ESRI Spatial Binary File | 3.3 |
| .SBN | Cisco IP Phone Firmware File | 3.8 |
| .SBP | OpenSBP CNC Program File | 2.2 |
| .SBPROJ | OpenGL Shader Builder Project | 2.0 |
| .SBS | SPSS Script | 2.4 |
| .SBU | Samsung Backup File | 3.9 |
| .SBV | YouTube Captions File | 4.2 |
| .SBW | US Treasury Savings Bonds Wizard File | 3.0 |
| .SBX | ESRI Spatial Index File | 1.8 |
| .SBZ | ShowBiz Project File | 3.0 |
| .SC | Scala Worksheet | 4.0 |
| .SC | SuperCollider Source Code File | 3.7 |
| .SC2 | Sample Cell II Instrument Definition | 4.0 |
| .SC2ARCHIVE | Blizzard StarCraft 2 Archive File | 4.0 |
| .SC2ASSETS | Blizzard StarCraft 2 Assets File | 4.3 |
| .SC2BANK | StarCraft 2 Bank File | 3.5 |
| .SC2DATA | Blizzard StarCraft 2 Data File | 3.0 |
| .SC2MA | StarCraft 2 Map Data File | 4.0 |
| .SC2MAP | Blizzard StarCraft 2 Map File | 4.1 |
| .SC2MOD | Blizzard StarCraft 2 Modification File | 4.0 |
| .SC2REPLAY | Blizzard StarCraft 2 Replay File | 4.2 |
| .SC2SAVE | Blizzard StarCraft 2 Saved Game | 4.2 |
| .SC4 | SimCity 4 Saved File | 4.1 |
| .SC4 | SuperCard 4 Project File | 2.8 |
| .SC45 | SuperCard Project File | 3.5 |
| .SC4DESC | SimCity 4 Description File | 4.0 |
| .SC4LOT | SimCity 4 Lot File | 3.2 |
| .SC4MODEL | SimCity 4 Model File | 3.7 |
| .SCA | Norton AntiVirus Scan File | 4.0 |
| .SCA | Scala Script File | 3.0 |
| .SCAD | OpenSCAD Script | 3.8 |
| .SCALA | Scala Source Code File | 3.6 |
| .SCAR | SCAR Script | 3.8 |
| .SCB | Scrambls Encrypted File | 3.7 |
| .SCC | SourceSafe Source Code Control File | 3.7 |
| .SCC | ScreenFlow Screen Recording | 3.6 |
| .SCD | TurboTax Tax Schedule List | 3.0 |
| .SCDOC | SpaceClaim Document | 3.0 |
| .SCE | Scilab Script | 3.0 |
| .SCF | Shell Command File | 3.0 |
| .SCF | DNA Sequence Chromatogram File | 2.7 |
| .SCG | myPM SCG Definition File | 3.2 |
| .SCGC | myPM SCG Classic Data File | 3.5 |
| .SCGP | myPM SCG Pro Data File | 2.0 |
| .SCGS | myPM SCG Starter Data File | 3.0 |
| .SCH | gEDA Schematic File | 3.8 |
| .SCH | EAGLE Schematics File | 3.3 |
| .SCHEMATIC | Minecraft Schematic | 4.3 |
| .SCM | ScreenCam Screen Recording | 3.9 |
| .SCM | GIMP Script-Fu Script | 4.3 |
| .SCM | CLEO Compiled Script | 3.6 |
| .SCN | Age of Empires / Mythology Scenario | 3.2 |
| .SCN | SimCity 2000 Scenario | 2.5 |
| .SCN | Orbiter Scenario File | 2.0 |
| .SCO | TotalRecovery Backup Image | 3.5 |
| .SCPT | AppleScript Script File | 4.0 |
| .SCPTD | AppleScript Script Bundle | 3.0 |
| .SCR | Windows Screensaver | 3.9 |
| .SCR | Script File | 3.8 |
| .SCREENFLOW | ScreenFlow Document | 3.7 |
| .SCRIPT | Generic Script File | 3.9 |
| .SCRIPTSUITE | AppleScript Script Suite File | 2.0 |
| .SCRIPTTERMINOLOGY | AppleScript Script Terminology File | 4.0 |
| .SCRIV | Scrivener Document | 3.0 |
| .SCRIVX | Scrivener XML Document | 3.0 |
| .SCS | SimCity Societies Saved Game File | 4.2 |
| .SCS | Prism3D Game Data | 4.2 |
| .SCS11 | Show Cue System Cue File | 3.0 |
| .SCSS | Sass Cascading Style Sheet | 4.3 |
| .SCT | Scitex Continuous Tone Image | 2.8 |
| .SCV | ScanVec CASmate Sign File | 3.3 |
| .SCW | Movie Magic Screenwriter Document | 1.7 |
| .SCW | Score Writer Document | 3.6 |
| .SCWORLD | Survivalcraft World File | 4.5 |
| .SCX | Game Scenario File | 3.5 |
| .SCX | Microsoft Game Scenario File | 3.7 |
| .SCZ | SmartDraw Collection Package File | 3.0 |
| .SD | Sound Designer Audio File | 2.8 |
| .SD | ESPS Sampled Data | 3.4 |
| .SD2 | Sound Designer II File | 2.0 |
| .SD7 | Spring Content Package | 2.3 |
| .SDAT | Nintendo DS Sound Data File | 3.4 |
| .SDB | Application Compatibility Database | 3.9 |
| .SDB | SAP2000 Model File | 3.9 |
| .SDB | ServerBoss Database File | 3.6 |
| .SDB | MonKey Office SQLite Database File | 3.4 |
| .SDB | SparkleDB Database File | 3.3 |
| .SDC | Apache OpenOffice Calc Spreadsheet | 3.4 |
| .SDC | Secure Download Cabinet | 3.5 |
| .SDEF | AppleScript Dictionary Document | 2.5 |
| .SDF | Structure Data File | 3.6 |
| .SDF | Spatial Data Format File | 3.6 |
| .SDF | SQL Server Compact Database File | 3.6 |
| .SDG | Strater Project File | 2.7 |
| .SDL | Scene Description Language File | 3.4 |
| .SDLXLIFF | SDL Trados XLIFF Localization File | 2.0 |
| .SDOCX | Samsung Notes Note | 3.7 |
| .SDP | Session Description Protocol File | 3.0 |
| .SDR | SmartDraw Drawing | 3.1 |
| .SDR | Dell Support File | 3.7 |
| .SDS | MIDI Sample Dump Standard File | 4.1 |
| .SDS | OpenOffice Chart | 3.7 |
| .SDSK | SafeHouse Private Storage Volume | 3.7 |
| .SDT | SmartDraw Template File | 3.0 |
| .SDT | Grand Theft Auto 3 Audio File | 3.0 |
| .SDV | Studio DV Project File | 3.0 |
| .SDW | MrSID World File | 3.1 |
| .SDW | StarOffice Writer Text Document | 2.4 |
| .SDX | Kivuto Secure Download Manager File | 3.6 |
| .SDZ | Spring Content Package | 4.0 |
| .SE1 | Swiss Ephemeris Data File | 4.5 |
| .SEA | Self-Extracting Archive | 3.2 |
| .SEARCH-MS | Windows Saved Search File | 4.1 |
| .SEARCHCONNECTOR-MS | Windows Search Connector File | 4.2 |
| .SEC | PGP Secret Key Ring | 3.8 |
| .SEC | Samsung Security Video File | 2.9 |
| .SED | IExpress Self Extraction Directive File | 4.2 |
| .SEDPRJ | Slideshow Studio Elements Project | 3.5 |
| .SEED | Linux Preseed File | 3.3 |
| .SEF | Encryptafile Signature File | 4.3 |
| .SEN | SenTest Data File | 3.5 |
| .SEO | SEO Note File | 3.4 |
| .SEQ | PowerTracks Pro Audio Project File | 3.2 |
| .SEQ | NorPix StreamPix Sequence | 2.7 |
| .SES | Audition Session (Legacy) | 2.8 |
| .SESSION | CATIA 4 Session File | 3.3 |
| .SESX | Audition Session | 3.8 |
| .SET | Settings File | 4.3 |
| .SETTINGCONTENT-MS | Windows Settings File | 3.6 |
| .SETTINGS | Visual Studio Settings File | 4.2 |
| .SF2 | SoundFont 2 Sound Bank | 4.1 |
| .SFAR | Mass Effect 3 DLC File | 4.5 |
| .SFC | Super Famicom ROM | 4.1 |
| .SFD | Spline Font Database | 4.0 |
| .SFF | Standard Flowgram Format File | 4.2 |
| .SFK | Sound Forge Pro Audio Peak File | 4.0 |
| .SFO | CuteFTP Search File | 3.9 |
| .SFO | PSP Game Parameters File | 4.1 |
| .SFPACK | Packed SoundFont File | 3.8 |
| .SFS | Squashfs File Archive | 3.7 |
| .SFT | Microsoft App-V Sequencer File | 3.5 |
| .SFV | Simple File Verification File | 4.0 |
| .SFVIDCAP | Sonic Foundry Video Capture File | 3.5 |
| .SFX | Windows Self-extracting Archive | 3.8 |
| .SFZ | SFZ Sample Definition File | 3.0 |
| .SG0 | Humongous Entertainment Game Save File | 4.0 |
| .SGA | Relic Entertainment Game Archive | 3.5 |
| .SGB | Dawn of War Map File | 3.3 |
| .SGD | GeneSnap Image File | 2.8 |
| .SGF | Smart Game Format File | 3.0 |
| .SGM | SGML File | 3.3 |
| .SGM | VisualBoyAdvance Saved Game | 3.8 |
| .SGML | Standard Generalized Markup Language File | 2.5 |
| .SGP | MP3 Audio Mixer Sound Group Project | 3.8 |
| .SGPBPRJ | Baltie Project | 3.0 |
| .SGT | SPSS Chart Template | 2.7 |
| .SH | Bash Shell Script | 3.9 |
| .SH | Unix Shell Archive | 3.5 |
| .SH3D | Sweet Home 3D Design | 4.0 |
| .SH3F | Sweet Home 3D Model Library | 3.8 |
| .SHD | Windows Print Job Shadow File | 3.6 |
| .SHN | Shorten Compressed Audio File | 3.3 |
| .SHOW | Thinkfree Office NEO Show Document | 2.8 |
| .SHP | 3D Studio Shape | 3.6 |
| .SHP | ESRI Shapefile | 3.0 |
| .SHR | Unix Shell Archive File | 2.8 |
| .SHS | Microsoft Scrap File | 3.6 |
| .SHTM | HTML Server Side Include File | 3.3 |
| .SHTML | Server Side Include HTML File | 3.7 |
| .SHW | Corel Presentation | 2.6 |
| .SHW | MagicQ Show File | 3.0 |
| .SHX | AutoCAD Compiled Shape File | 3.6 |
| .SHX | Shapefile Index File | 2.8 |
| .SHX | Motorola Flash Superfile | 3.0 |
| .SHY | ShyFile Encrypted File | 3.7 |
| .SIB | Sibelius Score | 3.7 |
| .SID | MrSID Image | 3.3 |
| .SID | ScanIt Document | 1.7 |
| .SID | Steam Game Data Backup File | 3.7 |
| .SIDX | StuffIt Archive Index File | 2.0 |
| .SIF | Windows Setup Information File | 4.3 |
| .SIFZ | Synfig Studio Compressed Project | 3.6 |
| .SIG | Signature File | 3.6 |
| .SIG | Broderbund Sign File | 3.5 |
| .SIG | QuickTac SIG File | 3.4 |
| .SII | SCS Software Game Data | 4.3 |
| .SIM | SAP Tutor File | 3.2 |
| .SIMP | Software Ideas Modeler Project | 2.5 |
| .SIMS2PACK | Downloaded Sims 2 Package File | 3.9 |
| .SIMS3 | The Sims 3 Game Save File | 4.4 |
| .SIMS3PACK | The Sims 3 Package File | 4.5 |
| .SIS | Symbian Installation File | 4.0 |
| .SIS | Steam Game Backup Information File | 4.0 |
| .SIS | Sisma Database File | 3.8 |
| .SIS.DM | Ovi Store DRM-Protected Application | 4.3 |
| .SISX | Symbian OS 9.1+ Installation File | 3.8 |
| .SISX.DM | Nokia Ovi Store DRM-Protected Application | 3.7 |
| .SIT | StuffIt Archive | 4.1 |
| .SITEMAP | ASP.NET Site Map File | 3.3 |
| .SITES | iWeb Website Design Project | 3.0 |
| .SITES2 | iWeb Website Design Project | 3.6 |
| .SITX | StuffIt X Archive | 3.7 |
| .SIV | Silicon Imaging Video File | 3.7 |
| .SJD | Scrapbook Factory Journal File | 3.0 |
| .SK2 | ChemSketch Drawing | 3.3 |
| .SKB | SketchUp Backup Document | 3.7 |
| .SKBA | SketchBook Pro Animation File | 4.0 |
| .SKETCH | Sketch Drawing | 3.2 |
| .SKF | AutoSketch Drawing | 3.9 |
| .SKI | Motorola Phone Skin File | 3.0 |
| .SKIN | ASP.NET Skin File | 4.1 |
| .SKINDEX | Mail Index File | 3.0 |
| .SKITCH | Skitch Image | 4.0 |
| .SKL | Maya Skeleton File | 3.0 |
| .SKM | SketchUp Material File | 3.0 |
| .SKN | Symbian OS Skin File | 2.6 |
| .SKP | SketchUp Document | 3.9 |
| .SKR | PGP Private Keyring | 3.8 |
| .SKV | Semicolon Separated Values File | 3.0 |
| .SKX | XLANG Schedule File | 2.5 |
| .SKYPECHATSTYLE | Chat Style File | 4.0 |
| .SKZ | SuperKaramba Theme | 4.3 |
| .SL | Software License File | 3.1 |
| .SLA | Scribus Document | 3.3 |
| .SLA.GZ | Scribus Compressed Document | 3.0 |
| .SLD | Styled Layer Descriptor File | 3.0 |
| .SLDASM | SolidWorks Assembly | 3.7 |
| .SLDDRT | SolidWorks Drawing Sheet | 3.8 |
| .SLDDRW | SolidWorks Drawing | 3.1 |
| .SLDPRT | SolidWorks Part | 3.8 |
| .SLDTM | SDL Translation Memory File | 3.0 |
| .SLE | Sisulizer Package File | 2.6 |
| .SLF | Symantec License File | 3.8 |
| .SLI | OMSI Spline Configuration File | 4.0 |
| .SLK | Symbolic Link File | 3.3 |
| .SLN | Visual Studio Solution File | 3.8 |
| .SLOGO | StarLogo Project File | 4.0 |
| .SLP | SpectraLayers Pro Project | 4.0 |
| .SLP | Sisulizer Project File | 3.5 |
| .SLT | Mozilla User Profile Folder | 3.6 |
| .SLTNG | StarLogo TNG Project File | 3.5 |
| .SLUPKG-MS | XrML Digital License Package | 2.4 |
| .SLX | MathWorks Simulink Model File | 3.5 |
| .SLX | SpectraLayers Pro Project | 3.0 |
| .SM | StepMania Song File | 4.0 |
| .SM | SMath Studio Document | 4.8 |
| .SMA | SmartMusic Accompaniment File | 3.0 |
| .SMA | AMX Mod Plugin Source File | 3.6 |
| .SMALI | Android Smali Assembly Language File | 3.9 |
| .SMC | Super Nintendo Game ROM | 4.3 |
| .SMD | Valve Studiomdl Data File | 4.2 |
| .SME | Samsung Mobile Backup File | 2.8 |
| .SMF | Standard MIDI File | 3.7 |
| .SMI | SAMI Subtitles File | 2.4 |
| .SMI | SMIL Presentation | 2.8 |
| .SMIL | SMIL Presentation File | 3.0 |
| .SMK | Smacker Compressed Movie File | 3.0 |
| .SMP | SmartMusic Performance File | 2.8 |
| .SMPF | Sprite Monkey Project | 4.0 |
| .SMPKG | SmartMusic Package File | 3.0 |
| .SMPX | SmartMusic Accompaniment File | 2.7 |
| .SMRAILROADSSAVEDGAME | Sid Meier's Railroads! Saved Game | 4.3 |
| .SMS | Exported SMS Text Message | 3.1 |
| .SMT | Samsung Theme File | 3.3 |
| .SMX | SmartMusic XML File | 3.1 |
| .SMZIP | StepMania Package | 3.8 |
| .SN1 | Drive Snapshot Backup Continuation 1 | 3.8 |
| .SN2 | Drive Snapshot Backup Continuation 2 | 3.3 |
| .SNA | Drive Snapshot Primary Backup File | 3.8 |
| .SNAG | Snagit for Windows Capture | 3.8 |
| .SNAGITSTAMPS | Snagit Stamp Archive | 2.5 |
| .SNAGPROJ | Snagit for Mac Capture | 3.2 |
| .SNAGSTYLES | Snagit Style Archive | 3.0 |
| .SNAPFIRESHOW | Corel SnapfireShow File | 2.7 |
| .SNAPSHOT | VMware ThinApp Snapshot File | 3.9 |
| .SND | Sound File | 2.6 |
| .SND | Macintosh Sound Resource | 2.2 |
| .SNF | Starry Night Pro Document | 4.0 |
| .SNG | MIDI Song | 3.4 |
| .SNK | Strong Name Key File | 4.2 |
| .SNP | Access Report Snapshot | 3.1 |
| .SNS | Save-N-Sync Project File | 2.3 |
| .SNT | Sticky Notes File | 3.3 |
| .SO | Shared Library | 3.9 |
| .SOEPSX | Player Studio Viewer Item File | 2.5 |
| .SOL | Flash Local Shared Object File | 3.9 |
| .SONG | AudioSauna Song File | 3.2 |
| .SOU | SBStudio II Sound File | 3.5 |
| .SP | SignPlot Traffic Sign File | 3.3 |
| .SP | Simplexety Parameters File | 3.2 |
| .SPA | MikuMikuDance Sphere Mapping File | 3.5 |
| .SPARC | Skype Plugin Archive | 4.0 |
| .SPARSEBUNDLE | Mac OS X Sparse Bundle | 2.3 |
| .SPARSEIMAGE | Mac OS X Sparse Image | 3.0 |
| .SPB | Flight Simulator Mission File | 3.9 |
| .SPC | Software Publisher Certificate File | 3.9 |
| .SPC | SNES Soundtrack File | 4.2 |
| .SPD | SPSS Custom Dialog File | 2.9 |
| .SPDF | Sealed PDF File | 3.3 |
| .SPE | WinSpec CCD Capture File | 3.1 |
| .SPEC | RPM Specification File | 2.8 |
| .SPECCY | Speccy Snapshot | 4.5 |
| .SPF | Slingplayer Favorites File | 3.0 |
| .SPFX | Squeeze Presets File | 2.0 |
| .SPG | TCP Optimizer Backup File | 4.2 |
| .SPH | MikuMikuDance Sphere Mapping File | 3.5 |
| .SPJ | PhotoStage Slideshow Project | 3.8 |
| .SPK | Synology Package | 3.3 |
| .SPL | Windows Print Spool File | 3.2 |
| .SPLANE | Simple Planes Plane File | 3.9 |
| .SPP | Altova XMLSpy Project | 3.0 |
| .SPP | Serif PhotoPlus Picture File | 3.6 |
| .SPPACK | SPPack Sound Sample | 3.0 |
| .SPQ | SPSS Database Query File | 3.0 |
| .SPR | Half-Life Sprite | 4.0 |
| .SPRITE | SuperTux Sprite File | 2.7 |
| .SPS | SPSS Program File | 3.4 |
| .SPS | SyncBack Settings File | 3.0 |
| .SPT | SpeedTree Tree Data File | 3.8 |
| .SPUB | Swift Publisher Document | 2.5 |
| .SPUB | Disc Cover File | 2.0 |
| .SPV | SPSS Output Document | 3.0 |
| .SQ | Sysquake Program | 4.0 |
| .SQB | SQL Backup SQL Server Backup File | 4.1 |
| .SQD | SQ Data File | 3.0 |
| .SQD | Configuration Settings File | 3.3 |
| .SQF | ArmA Script | 3.6 |
| .SQF | Sothink SWF Quicker File | 3.0 |
| .SQFS | Squash FS Bootable File | 3.5 |
| .SQL | Structured Query Language Data File | 3.9 |
| .SQLITE | SQLite Database | 3.8 |
| .SQLITE3 | SQLite 3 Database | 3.9 |
| .SQLITEDB | SQLite Database | 4.0 |
| .SQM | Service Quality Monitoring File | 3.6 |
| .SQM | Operation Flashpoint Mission File | 1.8 |
| .SQR | SQL Program File | 4.0 |
| .SQX | SQX Archive | 4.0 |
| .SQZ | Squeeze Project File | 3.3 |
| .SR0 | SecuROM Analysis File | 4.3 |
| .SR2 | Sony RAW Image | 3.7 |
| .SRC | Source Code File | 3.3 |
| .SRC.RPM | Red Hat Package Manager Source File | 3.0 |
| .SRF | Sony RAW Image | 3.4 |
| .SRF | Surfer Project File | 2.9 |
| .SRF | LightWave Surface File | 3.4 |
| .SRF | Server Response File | 3.5 |
| .SRM | Super Nintendo ROM Save | 3.7 |
| .SRR | ReScene Metadata File | 3.8 |
| .SRS | Outlook Send/Receive Settings File | 2.7 |
| .SRT | SubRip Subtitle File | 3.8 |
| .SRW | Samsung RAW Image | 3.3 |
| .SS | SilverStripe Source Code File | 3.1 |
| .SSA | Sub Station Alpha Subtitle File | 2.7 |
| .SSC | StepMania Song File | 3.6 |
| .SSC | SourceSafe Status File | 1.8 |
| .SSD | WindowBlinds Skin File List | 4.1 |
| .SSEQ | Nintendo DS Sound Sequence File | 3.8 |
| .SSF | Trimble Standard Storage Format File | 4.1 |
| .SSI | Adobe Dreamweaver Server Side Include File | 3.8 |
| .SSLF | HLSW Shared Server List File | 4.0 |
| .SSM | Sound Clip Archive | 3.0 |
| .SSP | Screensaver Producer Project File | 1.8 |
| .SSP | SlideShow Creator Project File | 3.7 |
| .SSS | WindowBlinds Substyle File | 3.2 |
| .SSV | Seavus Secure Project File | 3.7 |
| .SSW | Sony Ericsson Firmware File | 2.5 |
| .ST | Atari ST Disk Image | 3.1 |
| .STA | ABAQUS Status File | 2.9 |
| .STA | MAME Saved State File | 3.5 |
| .STAP | Soundtrack Pro Audio Project File | 3.5 |
| .STB | AutoCAD Plot Style Table File | 4.4 |
| .STD | PROMT Translator Document | 2.4 |
| .STDL | Swift To-Do List Database | 3.6 |
| .STE | Dreamweaver Site Settings File | 3.3 |
| .STENCYL | Stencyl Game File | 4.0 |
| .STEP | STEP 3D Model | 3.5 |
| .STG | ActiveSync Backup File | 3.9 |
| .STH | Lotus Domino Stash File | 3.0 |
| .STIX | Structured Threat Information eXpression File | 2.5 |
| .STK | Pivot Animator Stick Figure | 4.2 |
| .STL | Stereolithography File | 3.8 |
| .STL | European Broadcasting Union Subtitles File | 1.9 |
| .STM | Exchange Streaming Media File | 3.4 |
| .STO | PRO100 3D Interior Design Project | 2.4 |
| .STORY | Storyist Document | 3.8 |
| .STORYBOARD | Xcode Interface Builder Storyboard | 3.6 |
| .STORYMILL | StoryMill Project File | 2.5 |
| .STP | STEP 3D CAD File | 3.7 |
| .STP | Analysis Studio Project Information File | 1.6 |
| .STPROJ | Samsung Theme Document | 2.0 |
| .STR | dBASE Structure List Object File | 3.8 |
| .STRINGS | Text Strings File | 3.5 |
| .STRM | Stream Location File | 3.7 |
| .STT | Streets & Trips Map Template | 3.0 |
| .STX | Scream Tracker Music Interface Kit File | 2.5 |
| .STY | LaTeX Style | 4.0 |
| .STY | Band-in-a-Box Styles File | 4.1 |
| .STYK | Stykz Stick Figure | 4.0 |
| .STYKZ | Stykz Animation | 3.2 |
| .STYLE | SketchUp Style | 4.4 |
| .STYLE | ArcGIS Style Manager File | 3.2 |
| .SUB | MicroDVD Subtitle File | 3.9 |
| .SUB | CloneCD Subchannel File | 3.8 |
| .SUBLIME-PACKAGE | Sublime Text Package File | 3.6 |
| .SUBLIME-PROJECT | Sublime Text Project File | 3.2 |
| .SUBLIME-WORKSPACE | Sublime Text Workspace File | 2.0 |
| .SUCK | SiteSucker Website File | 2.0 |
| .SUD | Super Project Analyzer File | 3.6 |
| .SUD | Sudoku Puzzle File | 2.5 |
| .SUF | Ccrypt Encrypted File | 4.3 |
| .SUIT | Macintosh Font Suitcase | 2.3 |
| .SUM | Scilab Unit Operation Model File | 3.7 |
| .SUO | Visual Studio Solution User Options File | 3.9 |
| .SUP | Subtitle Bitmap File | 3.3 |
| .SUP | Super Project Definition File | 3.4 |
| .SV$ | AutoCAD Automated Backup File | 3.8 |
| .SV2I | Symantec System Index File | 4.0 |
| .SVD | Roland Patch File | 3.7 |
| .SVF | Serial Vector Format File | 3.5 |
| .SVG | Scalable Vector Graphic | 4.3 |
| .SVGZ | Compressed SVG File | 4.2 |
| .SVI | Samsung Video File | 2.2 |
| .SVN-BASE | Subversion Base File | 3.6 |
| .SVN-WORK | Subversion Cache File | 4.0 |
| .SVS | Game Boy Advance Saved State File | 3.7 |
| .SVX | Survex Cavern Data File | 3.3 |
| .SW2 | Softwrap License File | 3.4 |
| .SWA | Shockwave Audio | 3.6 |
| .SWC | Flex Components Archive | 3.9 |
| .SWC | Super Nintendo Wild Card ROM File | 3.4 |
| .SWD | Flash Debug File | 3.9 |
| .SWF | Shockwave Flash Movie | 4.2 |
| .SWI | SWiSH Project File | 3.7 |
| .SWIFT | Swift Source Code File | 3.9 |
| .SWITCH | Switch Package | 2.4 |
| .SWJ | SolidWorks Journal File | 3.3 |
| .SWK | StudyWorks Save File | 2.0 |
| .SWP | Swap File | 3.5 |
| .SWP | Vi Swap File | 3.3 |
| .SWT | Flash Generator Template | 3.3 |
| .SWZ | Adobe Flash Player Cache File | 2.7 |
| .SX | SimplexNumerica Data File | 3.2 |
| .SXC | StarOffice Calc Spreadsheet | 3.7 |
| .SXD | StarOffice Drawing | 3.3 |
| .SXD | ArcScene Document | 2.9 |
| .SXI | StarOffice Impress Presentation | 3.6 |
| .SXT | Propellerhead Reason NN-XT Patch File | 3.5 |
| .SXW | StarOffice Writer Document | 3.3 |
| .SYH | Synchomatic Instrument | 3.3 |
| .SYM | Symbols File | 3.5 |
| .SYM | gEDA Symbol File | 3.0 |
| .SYN | SimSynth Document | 2.9 |
| .SYNW-PROJ | SynWrite Project | 3.4 |
| .SYS | Windows System File | 4.1 |
| .SYS | Motorola Cell Phone Driver | 3.8 |
| .SYW | SY99/SY85 Audio | 3.3 |
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