File extensions beginning with the letter S. Commonly used extensions are listed in bold.

	S  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z .s Source Code File (more info) .s00 ZipSplitter Part 1 Archive (more info) .s01 ZipSplitter Part 2 Archive (more info) .s02 ZipSplitter Part 3 Archive (more info) .s19 Motorola S19 File Record (more info) .s3i Scream Tracker 3 Instrument (more info) .s3m ScreamTracker 3 Module (more info) .s7z Mac OS X 7-Zip File (more info) .s85 Sabre Airline Solutions Chart (more info) .sa9 Hue and Cry Photoshop Plug-In (more info) .sad Black & White Audio File (more info) .saf Street Atlas USA Map File (more info) .saf SafeText File (more info) .saf Secure Audio File (more info) .safetext SafeText File (more info) .sam MOD Edit Sample File (more info) .sam Ami Pro Document (more info) .sar Service Archive File (more info) .sar Sibelius Arrange Style (more info) .sar Saracen Paint Graphic (more info) .sas SAS Program File (more info) .sat ACIS SAT Model File (more info) .sav SPSS Data File (more info) .sav Saved Game (more info) .save Nano Temporary Save File (more info) .saveddeck Nokia Saved Web Page (more info) .savedsearch Spotlight Saved Search (more info) .saver Mac OS X Screen Saver (more info) .sb Signed Byte Audio File (more info) .sbf SmartBroker Data (more info) .sbi Sound Blaster Instrument (more info) .sbk E-MU SoundFont Sound Bank (more info) .sbk SWiSH Project Backup File (more info) .sbk Scrapbook Factory File (more info) .sbk Multimedia ToolBook System Book (more info) .sbt SBT Subtitle File (more info) .sc SuperCollider Source Code File (more info) .sc2 Sample Cell II Instrument Definition (more info) .sc4 Sim City 4 Saved File (more info) .sca Scala Script File (more info) .sca Norton AntiVirus Scan File (more info) .scar SCAR Script (more info) .scb Scala Published Script (more info) .scc Scenarist Closed Caption File (more info) .scd TurboTax Schedule Description (more info) .scf Windows Explorer Command (more info) .scf DNA Sequence Chromatogram File (more info) .scf SimTown Sounds File (more info) .scg ColorRIX Bitmap Graphic (more info) .sch EAGLE Schematics File (more info) .sci ColorRIX Bitmap Graphic (more info) .scm GIMP Script-Fu Script (more info) .scm Super Chain Media File (more info) .scm StarCraft Map File (more info) .scm ScreenCam Screen Recording (more info) .scm Schema File (more info) .scn Pinnacle Studio Scene File (more info) .scn SimCity Scenario File (more info) .scp ColorRIX Bitmap Graphic (more info) .scpt AppleScript Script File (more info) .scr Windows Screensaver (more info) .scr Script File (more info) .script Generic Script File (more info) .sct FoxPro Form Memo (more info) .sct Scitex Continuous Tone File (more info) .sct Windows Script Component (more info) .scu ColorRIX Bitmap Graphic (more info) .scv ScanVec CASmate Sign File (more info) .scw Movie Magic Screenwriter Document (more info) .scw Score Writer Document (more info) .scx FoxPro Form (more info) .scx Microsoft Game Scenario File (more info) .scx Game Scenario File (more info) .sd ESPS Sampled Data File (more info) .sd Sound Designer Audio File (more info) .sd2 Sound Designer II File (more info) .sda OpenOffice.org Draw Document (more info) .sdb ServerBoss Database File (more info) .sdb OpenOffice.org Base Database File (more info) .sdb SocialDecks Blog File (more info) .sdb MonKey Office SQLite Database File (more info) .sdb Custom Application Compatibility Database (more info) .sdb SAP2000 Model File (more info) .sdc Secure Download Cabinet (more info) .sdc Stardock Central Download Archive (more info) .sdc OpenOffice.org Calc Spreadsheet (more info) .sdd StarOffice Presentation (more info) .sdf SQL Server Compact Database File (more info) .sdf Standard Data File (more info) .sdf Spatial Data Format File (more info) .sdm StarOffice Mail Message (more info) .sdm Spatial Data Modeling Language File (more info) .sdn Shareware Distributors Network File (more info) .sdp Session Description Protocol File (more info) .sdq SAS Data File (more info) .sdr SmartDraw Drawing (more info) .sds MIDI Sample Dump Standard File (more info) .sds OpenOffice.org Chart (more info) .sds SDS Apps Data File (more info) .sdt Grand Theft Auto III Audio File (more info) .sdt SmartDraw Template File (more info) .sdw StarOffice Writer Text Document (more info) .sdx Sample MIDI Dump Exchange (more info) .sea Self-Extracting Archive (more info) .sec PGP Secret Key Ring (more info) .seed Linux Preseed File (more info) .sef Encryptafile Signature File (more info) .sen Scifer Internal Header Archive (more info) .seo SEO Note File (more info) .seq DNA Sequence Text File (more info) .ser GeneMapper Project File (more info) .ses Audition Session (more info) .set Document Library Property Set File (more info) .set Settings File (more info) .sew Home Embroidery Format (more info) .sf IRCAM Sound File (more info) .sf2 SoundFont 2 Sound Bank (more info) .sfcache ReadyBoost Cache File (more info) .sfd Sofdec Dreamcast Movie (more info) .sff Structured Fax Format (more info) .sfk Sound Forge Audio Peak File (more info) .sfl Sound Forge Sound Data File (more info) .sfo PSP Game Parameters File (more info) .sfo CuteFTP Search File (more info) .sfs SquashFS File Archive (more info) .sfv Simple File Verification File (more info) .sfvidcap Sonic Foundry Video Capture File (more info) .sfw Seattle FilmWorks Image (more info) .sfx Windows Self-Extracting Archive (more info) .sgb Super Game Boy ROM File (more info) .sgi Silicon Graphics Image File (more info) .sgm SGML File (more info) .sgml Standard Generalized Markup Language File (more info) .sh Unix Shell Archive (more info) .sh Bash Shell Script (more info) .sh3d Sweet Home 3D Design File (more info) .sh3f Sweet Home 3D Model Library (more info) .shar Unix Shar Archive (more info) .shb Windows Document Shortcut (more info) .shg Segmented Hyper-Graphic (more info) .shk ShrinkIt Archive (more info) .shn Shorten Compressed Audio File (more info) .shortcut Asutype Shortcut (more info) .shp Shapes File (more info) .shp ESRI Shapefile (more info) .shr Unix Shell Archive File (more info) .shs Shell Scrap Object File (more info) .sht HTML File with Server Side Includes (more info) .shtm HTML Server Side Include File (more info) .shtml Server Side Include HTML File (more info) .shw Corel Presentation (more info) .shx Motorola Flash Superfile (more info) .shx Shapefile Index File (more info) .shy ShyFile Encrypted File (more info) .si Softimage Image Format (more info) .sib Sibelius Score (more info) .sid MrSID Image (more info) .sid Commodore 64 Music File (more info) .sid SID Audio File (more info) .sif Windows Setup Information File (more info) .sig Broderbund Sign File (more info) .sig Signature File (more info) .sim Aurora Image (more info) .simg Synclavier Disk Image File (more info) .sims2pack Downloaded Sims 2 Package File (more info) .sis Symbian Installation File (more info) .sisx Symbian OS Installation File (more info) .sit Stuffit Archive (more info) .site GoLive Website Project File (more info) .sitx Stuffit X Archive (more info) .sk2 ChemSketch Drawing (more info) .skb SketchUp Backup Document (more info) .skc SideKick Card File (more info) .ski Motorola Phone Skin File (more info) .skindex Mail Index File (more info) .skl Maya Skeleton File (more info) .skp SketchUp Document (more info) .skr PGP Private Keyring (more info) .skv XLANG Schedule Drawing File (more info) .skv Semicolon Separated Values File (more info) .skx XLANG Schedule File (more info) .skz SuperKaramba Theme (more info) .sl Software License File (more info) .sldasm SolidWorks Assembly File (more info) .slddrt SolidWorks Sheet File (more info) .slddrw SolidWorks Drawing File (more info) .sldprt SolidWorks Part File (more info) .sle Sisulizer Package File (more info) .sln Visual Studio Solution File (more info) .slp Sisulizer Project File (more info) .sls Image Playlist (more info) .slt Mozilla User Profile Folder (more info) .sm StepMania Song File (more info) .sma AMX Mod Plugin Source File (more info) .smc Super Nintendo Game ROM (more info) .smd Sega Mega Drive ROM (more info) .smf Standard MIDI File (more info) .smi Self-Mounting Disk Image (more info) .smi SMIL Presentation (more info) .smil SMIL Presentation File (more info) .smk Smacker Compressed Movie File (more info) .smm Ami Pro Macro (more info) .smp Xionics SMP Image Format (more info) .smp SampleVision Audio Sample Format (more info) .sms Sega Master System ROM File (more info) .sms Exported SMS Text Message (more info) .smv VideoLink Mail Video File (more info) .smzip StepMania Package (more info) .sn1 Drive Snapshot First Differential Backup (more info) .sn2 Drive Snapshot Second Differential Backup (more info) .sna Drive Snapshot Primary Backup File (more info) .snd Sound File (more info) .snd Akai MPC Sample (more info) .snd Macintosh Sound Resource (more info) .sng MIDI Song File (more info) .snippet Visual Studio IntelliSense Code Snippet (more info) .snm Netscape Mail Index (more info) .snp Access Report Snapshot (more info) .so Shared Library (more info) .sol Flash Local Shared Object File (more info) .sopt Synclavier Optical Disk Image File (more info) .sou SBStudio II Sound File (more info) .soundpack SoundPackager Sound Package (more info) .sp SignPlot Traffic Sign File (more info) .sparsebundle Mac OS X Sparse Bundle (more info) .sparseimage Mac OS X Sparse Image (more info) .spc Spectrum 512 Compressed Image (more info) .spd Sealed Acrobat Document (more info) .spdf Sealed PDF (more info) .spe WinSpec CCD Capture File (more info) .spg TCP Optimizer Backup File (more info) .spiff Still Picture Interchange File Format (more info) .spl FutureSplash Animation (more info) .spo SPSS Statistical Data Output File (more info) .spp PhotoPlus Picture File (more info) .sppack SPPack Sound Sample (more info) .spr Half-Life Sprite File (more info) .spr FoxPro Generated Screen File (more info) .sprg Synclavier Program File (more info) .sprite SuperTux Sprite File (more info) .sps SPSS Program File (more info) .spt TM File Packer Compressed Archive (more info) .spt ESPL Programming File (more info) .spt SpeedTree Tree Data File (more info) .spu Spectrum 512 Image (more info) .spub Disc Cover File (more info) .spv SPSS Output File (more info) .sq Sysquake Program (more info) .sqb SQL Backup SQL Server Backup File (more info) .sqd SQ Data File (more info) .sqfs Squash FS Bootable File (more info) .sql Structured Query Language Data (more info) .sqlite SQLite Database File (more info) .sqm Operation Flashpoint Mission File (more info) .sqm Service Quality Monitoring File (more info) .sqr SQL Program File (more info) .sqx SQX Archive (more info) .sqz Squeezed Video File (more info) .sr Sun Raster Image File (more info) .sr0 SecuROM Analysis File (more info) .src Source Code (more info) .srf Sony Raw Image File (more info) .srf Server Response File (more info) .srm Super Nintendo ROM Save File (more info) .srs Outlook Send/Receive Settings File (more info) .srt SubRip Subtitle File (more info) .ssa Sub Station Alpha Subtitle File (more info) .ssc SourceSafe Status File (more info) .ssd WindowBlinds Skin File List (more info) .sseq Synclavier Sequence File (more info) .sslf HLSW Shared Server List File (more info) .ssm Standard Streaming Metafile (more info) .ssnd Synclavier Sound File (more info) .sss WindowBlinds Substyle File (more info) .sst Serialized Certificate Store File (more info) .ssw Sony Ericsson Firmware File (more info) .st Atari ST Disk Image (more info) .sta ABAQUS Status File (more info) .stc StarOffice Calc Spreadsheet Template (more info) .std StarOffice Drawing Template (more info) .std CD/DVD Label Template (more info) .step STEP 3D Model (more info) .sth Lotus Domino Stash File (more info) .sti StarOffice Presentation Template (more info) .stk Stickfigure Animator File (more info) .stl Stereolithography File (more info) .stl Certificate Trust List (more info) .stl Fireworks Style Library (more info) .stm Scream Tracker 2 Module (more info) .stm Exchange Streaming Media File (more info) .stm SSI Web Page (more info) .stmb Synclavier Timbre File (more info) .stml SSI HTML File (more info) .sto PRO100 3D Interior Design Project (more info) .stp STEP 3D CAD File (more info) .stp SharePoint Template (more info) .str PlayStation Video Stream (more info) .str dBASE Structure List Object File (more info) .str Windows Screensaver File (more info) .strings Text Strings File (more info) .stt Streets & Trips Map Template (more info) .stw STATISTICA Workbook (more info) .stw StarOffice Text Document Template (more info) .stx Pinnacle Studio Project File (more info) .stx Scream Tracker Music Interface Kit File (more info) .sty LaTeX Style (more info) .sty Yamaha/Korg Keyboard Style (more info) .styk Stykz Stick Figure (more info) .stykz Stykz Animation (more info) .style ArcGIS Style Manager File (more info) .style SketchUp Style (more info) .sub Subtitle File (more info) .sub SubTerra Level File (more info) .sud Sudoku Puzzle File (more info) .sud Super Project Analyzer File (more info) .suf Ccrypt Encrypted File (more info) .suit Macintosh Font Suitcase (more info) .sun Sun Raster Graphic (more info) .suniff Sun TAAC Graphic (more info) .suo Visual Studio Solution User Options File (more info) .sup Super Project Definition File (more info) .sup Subtitle Bitmap File (more info) .sv5 BigJig Saved Puzzle (more info) .sv6 RollerCoaster Tycoon 2 Saved Game (more info) .svc IIS Special Content File (more info) .svg Scalable Vector Graphics File (more info) .svgz Compressed SVG File (more info) .svi Samsung Video File (more info) .svn-work Subversion Cache File (more info) .svr Compressed Virtual World (more info) .svs Game Boy Advance Saved State File (more info) .svx 8SVX Sound File (more info) .sw Signed Word Audio File (more info) .sw2 Softwrap License File (more info) .swa ShockWave Audio (more info) .swc Super Nintendo Wild Card ROM File (more info) .swc Flex Components Archive (more info) .swd Flash Debug File (more info) .swf Flash Movie (more info) .swi SWiSH Project File (more info) .switch Switch Package (more info) .swk StudyWorks Save File (more info) .swp Swap File (more info) .swt Flash Generator Template (more info) .sxc StarOffice Calc Spreadsheet (more info) .sxd StarOffice Drawing (more info) .sxi StarOffice Impress Presentation (more info) .sxm StarOffice Math File (more info) .sxw StarOffice Writer Text Document (more info) .syh Synchomatic Instrument (more info) .sys Motorola Driver File (more info) .sys Windows System File (more info) .syw Yamaha SY99/SY85 Audio File (more info) .syx MIDI System Exclusive Message (more info) .sz Winamp Classic Skin Download (more info)

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