| File extension | Developer/Producer | File description |
|---|---|---|
| S file extension | N/A | Source Code Format |
| S#+A file extension | RagTime GmbH | RagTime 2 |
| S00 file extension | Lithops | Split Multi-volume ZipSplitter Compressed File Archive (part 1) |
| S01 file extension | Lithops | Split Multi-volume ZipSplitter Compressed File Archive (part 2) |
| S02 file extension | Lithops | Split Multi-volume ZipSplitter Compressed File Archive (part 3) |
| S03 file extension | Lithops Software | Split Multi-volume ZipSplitter Compressed File Archive (part 4) |
| S04 file extension | Lithops Software | Split Multi-volume ZipSplitter Compressed File Archive (part 5) |
| S05 file extension | Lithops Software | Split Multi-volume ZipSplitter Compressed File Archive (part 6) |
| S06 file extension | Lithops Software | Split Multi-volume ZipSplitter Compressed File Archive (part 7) |
| S07 file extension | Lithops Software | Split Multi-volume ZipSplitter Compressed File Archive (part 8) |
| S08 file extension | Lithops Software | Split Multi-volume ZipSplitter Compressed File Archive (part 9) |
| S09 file extension | Lithops Software | Split Multi-volume ZipSplitter Compressed File Archive (part 10) |
| S10 file extension | Brasfoot.com | Brasfoot Saved Game Format |
| S19 file extension | Motorola | Motorola EEPROM Programming Format |
| S1J file extension | N/A | Sealed |
| S1P file extension | N/A | Touchstone 1 S-parameter Data |
| S2 file extension | Unreal Software | Stranded II Map |
| S28 file extension | N/A | Genesis Or Sega32X ROM Image |
| S2A file extension | SEAL | SEAL Program Format |
| S2D file extension | Agilent Technologies | Agilent EEsof EDA S-parameter Data |
| S2E file extension | Trong | SWF To EXE Converter Project Format |
| S2K file extension | N/A | Subtitle |
| S2M file extension | HeavenGames | Stronghold 2 Map Format |
| S2MA file extension | Blizzard Entertainment, Inc. | Starcraft 2 Map |
| S2MH file extension | Blizzard Entertainment | StarCraft 2 Map Header Format |
| S2MI file extension | Blizzard Entertainment, Inc. | Starcraft 2 Cache |
| S2ML file extension | Blizzard Entertainment | StarCraft 2 Map Localization Format |
| S2MV file extension | Blizzard Entertainment | Starcraft 2 Map Preview Image |
| S2P file extension | Sonnet Software Inc. | Sonnet S-device Parameter Data |
| S2QH file extension | Blizzard Entertainment | StarCraft 2 Localisation Header Format |
| S2QL file extension | Blizzard Entertainment | StarCraft 2 Unit Localisation Format |
| S2S file extension | CED | Spike2 Script |
| S2T file extension | N/A | Scia2Tekla Plugin |
| S2Z file extension | S2 Games | S2Games Savage Game Format |
| S31 file extension | TamoSoft | SmartWhois |
| S3D file extension | N/A | Philips 3D Solutions 3D Displays That Show 3D Content |
| S3DB file extension | N/A | MySQL Database |
| S3I file extension | N/A | ScreamTracker V3 Instrument Format |
| S3M file extension | Future Crew | Scream Tracker V3 Module |
| S3P file extension | N/A | AKAI MESA II/PC S-series Program |
| S3T file extension | Gavin Camp | Scorched 3D Tankpack |
| S3Z file extension | Future Crew | Amiga And Pc Tracker Module Format |
| S43 file extension | Texas Instruments Inc. | IAR Assembly Source |
| S4E file extension | Ideaworks3D Limited | Airplay SDK Header |
| S4M file extension | Irrational Games | SWAT 4 Map Format |
| S4P file extension | N/A | Touchstone 16 S-parameters Data |
| S57 file extension | N/A | International Hydrographic Organization Vector Image |
| S5X file extension | Ubisoft | Heritage Of Kings: The Settlers Map Format |
| S6BN file extension | Microsoft Corporation | Word 6 For Mac Template |
| S7 file extension | Avid Technology, Inc. | Sibelius Music Notation |
| S7P file extension | N/A | SubSeven Trojan |
| S7Z file extension | N/A | 7-zip Compressed Format |
| S85 file extension | Sabre | SABRE StaffPlan Chart Format |
| S8BN file extension | Microsoft Corporation | Word 98 For Mac Template |
| S8L file extension | SAP AG | SAP GUI |
| S98 file extension | N/A | NEC PC-98 Audio |
| SA1 file extension | N/A | Nintendo Game Boy Emulator Save Format |
| SA2 file extension | N/A | Suprise! Adlib Tracker Music Module |
| SA4 file extension | DeLorme | Delorme Street Atlas USA |
| SA5 file extension | Information Security Corp. | SecretAgent Archive |
| SA7 file extension | DeLorme | Street Atlas Map Document |
| SA8 file extension | DeLorme | Street Atlas 8 Map Document |
| SA9 file extension | N/A | Hue And Cry Adobe Photoshop Plug-in Format |
| SAA file extension | Information Security Corp. | SecretAgent Encrypted Archive |
| SAAS file extension | N/A | Sass Indented Syntax |
| SAB file extension | Spatial | 3D ACIS Binary Format |
| SAB2 file extension | N/A | NVision 3D Scanner |
| SABL file extension | Activision | Call Ot Duty: Black Ops II Audio Library |
| SABS file extension | Activision | Call Ot Duty: Black Ops II Sounds |
| SACRED2SAVE file extension | Ascaron Entertainment | Sacred 2 Save Game |
| SAD file extension | Lionhead Studios | Lucas Arts Sound Format |
| SAF file extension | DeLorme | Street Atlas USA Map Format |
| SAFARIEXTZ file extension | Apple | Apple Safari Extension Format |
| SAFE file extension | WebMoney | WM Keeper CLASSIC Purse File Backup |
| SAFETEXT file extension | N/A | Encrypted Text |
| SAH file extension | Berkeley | Seti@home Data |
| SAI file extension | SYSTEMAX Software Development | PaintTool SAI Image |
| SAJ file extension | The Sage Group plc | Sage 50 Folder |
| SAK file extension | Running With Scissors | Postal Game Archive |
| SAL file extension | Oracle Corporation | SQL Application Language |
| SAM file extension | Samna | Ami Pro Document Format |
| SAM07 file extension | Course Technology | SAM 2007 Package Format |
| SAMBA3 file extension | The GNOME Project | Gnome Desktop |
| SAMI file extension | cpmusick | Grand Theft Auto San Andres Mod Installer Format |
| SAMRC file extension | Richard Hughey - Kevin Karplus - Anders Krogh | SAM Default Parameters |
| SAN file extension | LucasArts Entertainment Company, LLC | LucasArts Smush Animation Format |
| SAP file extension | Atari | Atari XL/XE Audio Format |
| SAPSSD file extension | N/A | SAP Related |
| SAR file extension | Sibelius | Sibelius Arrange Style Sar Format |
| SAS file extension | SAS Institute | SAS Source Code Format |
| SAS7BDAT file extension | SAS Institute Inc. | SAS Database |
| SAS7BNDX file extension | SAS Institute Inc. | SAS Index |
| SASS file extension | N/A | Syntactically Awesome Stylesheets Indented Syntax |
| SAT file extension | Spatial | 3D ACIS Model Format |
| SAV file extension | N/A | SPSS Data Sets Database Format |
| SAV2 file extension | GolemLabs Inc. | SuperPower Save Game |
| SAVE file extension | Nano | Nano Temporary Saved Format |
| SAVEDDECK file extension | Nokia | Nokia Saved Web Page Format |
| SAVEDSEARCH file extension | Apple | Spotlight Saved Search |
| SAVEDSTATE file extension | Virtual Router | Virtual Router Saved State Format |
| SAVER file extension | Apple | Mac OS X Screen Saver |
| SAVE_MULTIPLAYER file extension | The Creative Assembly | Total War Multiplayer Save |
| SAVF file extension | Oracle Corporation | AS400Manager JAVA |
| SAW file extension | Carolina Road Software L.L.C. | Living Scenes Jigsaw Puzzles |
| SAX file extension | Tridium, Inc. | Sedona Framework XML Application |
| SAY file extension | SayaMatrix | Saya Matrix Accounting Database |
| SAZ file extension | N/A | Fiddler Session Archive ZIP |
| SB file extension | MIT | Scratch Finished Product Format |
| SB1 file extension | Lasting Impressions for Paper Inc. | MemoryMixer Album |
| SB7 file extension | Lindersoft | SetupBuilder Project |
| SBA file extension | speedbalance.nl | SpeedBalance Accounting Data |
| SBB file extension | Microsoft | Microsoft Office Accounting Company Backup Format |
| SBC file extension | Microsoft | Microsoft Office Accounting Company Shortcut Format |
| SBD file extension | Microsoft | Microsoft Office Accounting Company Data Format |
| SBE file extension | Safer-Networking Ltd. | Spybot Excludes |
| SBF file extension | N/A | SmartBroker Data Format |
| SBG file extension | Jim Peters | SBaGen Binaural Beat Format |
| SBI file extension | N/A | Creative Labs SoundBlaster Instrument |
| SBK file extension | SWiSHzone.com | SWiSH Backup Format |
| SBL file extension | Adobe Systems Incorporated | Shockwave Flash Object |
| SBML file extension | N/A | Systems Biology Markup Language Source |
| SBN file extension | ESRI | ArcView Spatial Index For Read-write Shapefiles |
| SBO file extension | SAP AG | SAP Business One SDK Add-on Related |
| SBP file extension | OpenSBP Group | OpenSBP CNC Program Format |
| SBPROJ file extension | Apple | OpenGL Shader Builder Project |
| SBQ file extension | Superbase Developers | Superbase Query Definition Format |
| SBR file extension | Microsoft | Microsoft Visual Studio Visual C++ Source Browser Intermediate Format |
| SBRZ file extension | N/A | Sky Ebook Reader E-book |
| SBS file extension | IBM | SPSS Script Format |
| SBSC file extension | Adobe Systems Incorporated | Adobe Soundbooth Score Document |
| SBST file extension | Adobe Systems Incorporated | Adobe Soundbooth Score Template |
| SBSTORE file extension | Mozilla Corporation | Mozilla Firefox |
| SBT file extension | URUWorks | SBT Subtitle Format |
| SBU file extension | Samsung Group | Samsung Kies Backup |
| SBV file extension | YouTube Captions Format | |
| SBW file extension | US Treasury | US Treasury Savings Bonds Wizard Format |
| SBX file extension | ESRI | ArcView Spatial Index For Read-write Shape Format |
| SBZ file extension | ArcSoft, Inc. | ShowBiz Project |
| SC file extension | SuperCollider | SoundControl Audio Format |
| SC1 file extension | Maxis | SimCity |
| SC2 file extension | N/A | Sample Cell II PC/Mac Instrument Format |
| SC2000 file extension | Electronic Arts, Inc. | Sim City 2000 Tileset |
| SC2ARCHIVE file extension | Blizzard Entertainment | StarCraft 2 Archive Format |
| SC2ASSETS file extension | Blizzard Entertainment | StarCraft 2 Game Assets Format |
| SC2BANK file extension | Blizzard Entertainment | StarCraft 2 Bank Format |
| SC2DATA file extension | Blizzard Entertainment | Starcraft 2 A.I. Game Format |
| SC2LOCALE file extension | Blizzard Entertainment | StarCraft 2 Localization Format |
| SC2MA file extension | Blizzard Entertainment | StarCraft 2 Map Data Format |
| SC2MAP file extension | Blizzard Entertainment | StarCraft 2 Map Format |
| SC2MOD file extension | Blizzard Entertainment | StarCraft 2 Game Mod Format |
| SC2REPLAY file extension | Blizzard Entertainment | Starcraft 2 Game Replay Format |
| SC2SAVE file extension | Blizzard Entertainment | StarCraft 2 Game Saved Format |
| SC2SCENE file extension | Blizzard Entertainment | StarCraft 2 Cut Scene Format |
| SC3 file extension | Maxis | SimCity3000 Format |
| SC4 file extension | Electronic Arts | Game File Format |
| SC45 file extension | Solutions Etcetera | SuperCard Project Format |
| SC4DESC file extension | Electronic Arts | SimCity 4 Description Format |
| SC4LOT file extension | Electronic Arts | SimCity 4 Lot Format |
| SC4MODEL file extension | Electronic Arts | SimCity 4 Model Format |
| SC5 file extension | Chris Sawyer | Chris Sawyer Locomotion Scenario |
| SC6 file extension | Chris Sawyer Productions | RollerCoaster Tycoon 2 Scenario Format |
| SC? file extension | N/A | ColoRix Bitmap Image |
| SCA file extension | Symantec | Norton Antivirus Format |
| SCACFG file extension | Solutions Etcetera | SuperCard Application Configuration Format |
| SCAD file extension | OpenSCAD | OpenSCAD CAD Model Format |
| SCALA file extension | N/A | Scala Source |
| SCAP file extension | N/A | EFI Firmware Format |
| SCAR file extension | SCAR | SCAR Script Format |
| SCAT file extension | ARM Holdings plc | RealView Scatter-loading |
| SCB file extension | Scala | Scala InfoChannel Published Script |
| SCC file extension | Microsoft | Visual SourceSafe Control Format |
| SCD file extension | N/A | TurboTax Schedule Descriptions Format |
| SCDOC file extension | SpaceClaim Corporation | SpaceClaim 3D CAD |
| SCE file extension | MediaWeb | SoftCuisine Data Exchange |
| SCEA file extension | Bungie Studios | Marathon 2 Aleph One Map Format |
| SCENE file extension | Hidden Temple Studios | Antibody Level Format |
| SCEXCLUDB file extension | Smith Micro | Spring Cleaning Exclusions Format |
| SCF file extension | N/A | Windows Explorer Shell Command Format |
| SCG file extension | Midori Media | MyPM SCG Definition Format |
| SCH file extension | CadSoft | CAD Schematics Format |
| SCHDOC file extension | Altium Limited. | Altium Designer Schematic Capture Binary |
| SCHEMAS file extension | The GNOME Project | GConf Schema Definition Format |
| SCHEMATIC file extension | MCEdit | MCEdit Schematic Format |
| SCHEME file extension | SourceTec Software Co., LTD | Sothink Logo Maker Color Scheme |
| SCI file extension | ColoRIX | ColoRIX Graphics Image |
| SCL file extension | Manuel Op de Coul | Scala Scale |
| SCM file extension | SmartGuyz | StarCraft Campaign Map Format |
| SCMT file extension | GXS Limited | GXS Application Integrator XML Constraint |
| SCN file extension | Microsoft | Game Scenario Format |
| SCO file extension | FarStone Technology | Game Score Format |
| SCONSCRIPT file extension | N/A | SCons SConscript Configuration |
| SCONSTRUCT file extension | N/A | SCons Makefile |
| SCORE file extension | Tribal | Learning Score |
| SCP file extension | RIX Softworks | ColoRIX Bitmap Image |
| SCPCFG file extension | Solutions Etcetera | SuperCard Project Configuration Format |
| SCPRT file extension | Surfware, Inc. | Surfcam 3D Format |
| SCPT file extension | Apple | AppleScript Script Format |
| SCPTD file extension | Apple, Inc. | AppleScript Script Bundle |
| SCQ file extension | SAS Institute Inc. | SAS Sequential Access |
| SCR file extension | Microsoft | Microsoft Windows Screensaver Format |
| SCRABBLEHASBROSAVEDGAME file extension | Hasbro | Hasbro Scrabble Save Game |
| SCRATCH file extension | MIT | Scratch Project Format |
| SCREEM file extension | David A Knight | SCREEM |
| SCREENFLOW file extension | Telestream | ScreenFlow Document |
| SCRESTORELOG file extension | Smith Micro | Spring Cleaning Restore Log Format |
| SCRESULTS file extension | Smith Micro | Spring Cleaning Results Format |
| SCRIPT file extension | N/A | Generic Script Format |
| SCRIPT EDITOR file extension | Apple, Inc. | Apple Mac OS X AppleScript Script |
| SCRIPTSUITE file extension | Apple | AppleScript Script Suite Format |
| SCRIPTTERMINOLOGY file extension | Apple | AppleScript Script Terminology Format |
| SCRIV file extension | Literature & Latte | Literature & Latte Scrivener Document Format |
| SCRIVX file extension | Literature & Latte | Literature & Latte Scrivener Document Format |
| SCRO file extension | Visualization Sciences Group | Amira Script Object |
| SCS file extension | Electronic Arts | SimCity Societies Saved Game Format |
| SCS11 file extension | Show Cue Systems | Show Cue System Cue Format |
| SCSPACK file extension | Electronic Arts, Inc. | SimCity Societies Transfer Package |
| SCSS file extension | N/A | Syntactically Awesome Stylesheets Syntax |
| SCT file extension | Scitex | Scitex CT Bitmap Image Format |
| SCU file extension | RIX Softworks | ColoRIX Bitmap Image |
| SCUT2 file extension | Craft Edge Software | Sure Cuts A Lot |
| SCV file extension | ScanVec | ScanVec CASmate Sign Format |
| SCVINFO file extension | Microsoft Corporation | Windows Communication Foundation WCF Metadata |
| SCW file extension | N/A | Movie Magic Screenwriter Document Format |
| SCX file extension | N/A | FoxPro Main Screen Description Format |
| SCY file extension | OBP RESEARCH | ReaGeniX Security |
| SCZ file extension | SmartDraw.com | SmartDraw Package Collection Format |
| SD file extension | N/A | Sound Designer I Format |
| SD0 file extension | N/A | Dali Raw Image |
| SD1 file extension | Adobe Systems Incorporated | Dali Raw Image |
| SD2 file extension | N/A | Sound Designer 2 Format |
| SD2F file extension | Avid Technology | Sound Designer 2 Format |
| SD3 file extension | HY-TEK Sports Software | Hy-Tek Meet Manager Database Related |
| SD4 file extension | Programming Sunrise | Smart Diary Suite Database |
| SD7 file extension | Spring | Spring RTS Engine Data Format |
| SDA file extension | Oracle | StarOffice Drawing Format |
| SDAT file extension | Nintendo | Nintendo DS Sound Data Format |
| SDB file extension | Microsoft | |
| SDBN file extension | N/A | Microsoft Word 4/5 For Mac Template |
| SDBZ file extension | Symantec Corporation | Symantec Support Tool Information |
| SDC file extension | Oracle | OpenOffice.org Spreadsheet Format |
| SDD file extension | N/A | OpenOffice.org Impress Presentation Format |
| SDE file extension | Groundlevel Software, Inc. | Drumbeat Exported Data |
| SDEF file extension | Apple | AppleScript Dictionary Scripting Definition |
| SDEXP file extension | Parametric Technology Corporation | Creo Elements/Direct Model |
| SDF file extension | N/A | Standard Data Format |
| SDFA file extension | exocad GmbH | Exocad 3D |
| SDG file extension | Golden Software | Strater Geological Log |
| SDI file extension | Microsoft | System Deployment Image Format |
| SDIF file extension | N/A | Sound Description Interchange Format |
| SDII file extension | Avid Technology | Sound Designer 2 Audio Format |
| SDINSTALL file extension | Versoworks | Speckie Dictionary Format |
| SDIR file extension | Apple, Inc. | Apple Logic Space Designer Impulse Response |
| SDIRPROJ file extension | Apple, Inc. | Apple Impulse Response Utility Project |
| SDK file extension | N/A | Roland S-550/S-50/W-30 Disk Image |
| SDKMESH file extension | Microsoft Corporation | Microsoft DirectX Vertex Mesh |
| SDL file extension | N/A | Web Service Description Language Format |
| SDLPROFILE file extension | SDL plc. | TRADOS Exported User Settings |
| SDLTM file extension | SDL Tridion | SDL Trados Studio |
| SDLXLIFF file extension | SDL | SDL Trados Studio Format |
| SDM file extension | N/A | StarOffice Mail Format |
| SDMDOCUMENT file extension | Microsoft Corporation | Microsoft SDM Document |
| SDN file extension | N/A | Shareware Distributors Network Format |
| SDNF file extension | N/A | Steel Detailing Neutral Format |
| SDO file extension | Signere.no | Signere.no Signed Document |
| SDOC file extension | Oracle | Microsoft Word Sealed Document Format |
| SDP file extension | N/A | Session Description Protocol Format |
| SDPC file extension | N/A | Cocreate SolidDesigner Data |
| SDPX file extension | N/A | Kodak Cineon Image Format |
| SDQ file extension | N/A | SAS Data Format |
| SDR file extension | SmartDraw.com | SmartDraw Drawing Format |
| SDR2 file extension | N/A | H.264 MICRO DVR Camera Movie |
| SDS file extension | N/A | MIDI Sample Sound (DUMP Standard File) |
| SDSK file extension | PC Dynamics | SafeHouse Private Storage Volume Format |
| SDT file extension | SmartDraw.com | SmartDraw Template Format |
| SDV file extension | Pinnacle | Pinnacle Studio DV Video Editing Project |
| SDW file extension | N/A | OpenOffice.org Text Document Format |
| SDX file extension | N/A | Sample Sound Format |
| SDY file extension | Star Finanz GmbH | StarMoney |
| SDZ file extension | Spring | Spring Content Package |
| SE file extension | Procedimientos-Uno, S.L. | SEwin Project |
| SE1 file extension | CT Summation, Inc. | CT Summation IBlaze Database |
| SEA file extension | Smith Micro | StuffIt Expander Archive Format |
| SEAM file extension | JBoss | Seam Framework Java Servlet Format |
| SEARCH-MS file extension | Microsoft | Microsoft Windows Index Search Data Format |
| SEARCHCONNECTOR-MS file extension | Microsoft | Microsoft Windows Search Connector Description Format |
| SEARCHINDEXCACHE file extension | Apple, Inc. | Mac OS X Cache |
| SEC file extension | N/A | Pretty Good Privacy Secret Key Ring Format |
| SECSTORE file extension | Adobe Systems Incorporated | Adobe Secstore |
| SECURE file extension | Septium | Septium Secured Document |
| SECUREDOWNLOAD file extension | Apple, Inc. | Safari Download |
| SECURITY file extension | Oracle Corporation | Javasoft Jre 1.3 Lib Security |
| SECURITYSETTINGS file extension | Alpha Software, Inc. | Alpha Five Security Settings |
| SED file extension | Microsoft | Self Extracting Directive Format |
| SEDPRJ file extension | Ashampoo | Ashampoo Slideshow Studio Project Format |
| SEE file extension | LISTECH | LISCAD Plus |
| SEED file extension | N/A | Linux Preseed Format |
| SEEK file extension | Fabio Soares | Word List Expert Seek List |
| SEESTYLE file extension | Panic | Coda For Mac Style Sheet Format |
| SEF file extension | XenoSystems | Encryptafile Digital Signature Format |
| SEG file extension | Sierra Entertainment | Eragon Audio Format |
| SEG1 file extension | Smith Micro Software, Inc. | Stuffit Segment |
| SEG2 file extension | Smith Micro Software, Inc. | Stuffit Mac File Type |
| SEG3 file extension | Smith Micro Software, Inc. | Stuffit Segment |
| SEGN file extension | Smith Micro Software, Inc. | StuffIt Segment |
| SEGY file extension | N/A | SEG-Y Geophysical Data |
| SEL file extension | Mincom | Mincom LinkOne Selection List Format |
| SEM file extension | Alpha Software, Inc. | Alpha Five Set Objects |
| SEMAN file extension | The Eclipse Foundation | Xtext Semantics |
| SEN file extension | Neyer Software | SenTest Test Results |
| SEO file extension | SEO Note | SEO Note Format |
| SEP file extension | N/A | ChemSep Separation Case Format |
| SEPLUGIN file extension | Apple | Apple Mac OS X AppleScript Editor Plugin Format |
| SEQ file extension | PG Music | Power Tracks Pro Music Sequencer Format |
| SEQU file extension | Adobe Systems | Adobe Acrobat Sequence Format |
| SEQUENCEDIAGRAM file extension | Microsoft Corporation | Microsoft Visual Studio Sequence Diagram |
| SER file extension | Applied Biosystems | GeneMapper Project Format |
| SERVER file extension | N/A | Bonobo Activation API |
| SERVERDEF file extension | N/A | Server Definition |
| SERVERSTYLE file extension | Esri | ESRI ServerStyle |
| SERVICE file extension | N/A | Mac OS X Service Application |
| SES file extension | Adobe Systems | Adobe Audition Session Format |
| SESSION file extension | Dassault Systemes | CATIA V4 Session Format |
| SESX file extension | Adobe Systems | Adobe Audition Audio Session Format |
| SET file extension | N/A | Configuration Format |
| SETTINGCONTENT-MS file extension | Microsoft Corporation | Microsoft Windows 8.1 Configuration |
| SETTINGS file extension | Microsoft | Microsoft Visual Studio Settings Format |
| SETUP file extension | Crytek | CryENGINE Character Format |
| SEV file extension | ZX-Modules | SevenUp Picture |
| SEW file extension | N/A | Home Embroidery Format |
| SEX file extension | Alpha Software, Inc. | Alpha Five Set Index |
| SF file extension | N/A | IRCAM / MTU SoundFile Format |
| SF0 file extension | Microsoft Corporation | Windows Sytem Check |
| SF2 file extension | E-mu Systems | Creative Labs SoundFont 2.0 Bank Format |
| SF3 file extension | N/A | STATGRAPHICS Data |
| SF7 file extension | N/A | Sega SF-7000 ROM |
| SFA file extension | Sony Corporation | Sony Sound Forge |
| SFAP0 file extension | Sony | Sony Sound Forge Proxy Format |
| SFAR file extension | Electronic Arts | Mass Effect 3 DLC Add-on Format |
| SFARK file extension | N/A | Melody Machine Compressed SoundFont |
| SFB file extension | Sony | Sony Playstation 3 Game Disc Description Format |
| SFC file extension | N/A | Nintendo SNES9x ROM Format |
| SFCACHE file extension | Microsoft | ReadyBoost Cache Format |
| SFD file extension | N/A | Sofdec Sega Dreamcast Movie Format |
| SFF file extension | N/A | Structured Fax Format Image Format |
| SFI file extension | Corel Corporation | Corel Ventura Publisher HP LaserJet Printer Font |
| SFIL file extension | N/A | Macintosh System Sound |
| SFK file extension | Sony | Sound Forge Audio Peak Format |
| SFL file extension | Sony | Sony Sound Forge Sound Data Format |
| SFM file extension | DARTECH, Inc. | Dart PRO Soundtree Structure |
| SFN file extension | NCD Holding | EasySIGN Font |
| SFO file extension | N/A | CuteFTP Search Format |
| SFP file extension | N/A | Soft Font Printer Format |
| SFPACK file extension | N/A | SFPack Compressed Soundfont Format |
| SFR file extension | N/A | Sonic Foundry Sample Resource |
| SFS file extension | N/A | Squashfs Format |
| SFT file extension | Microsoft | Microsoft App-V Sequencer Format |
| SFV file extension | N/A | Simple File Verification Checksum Format |
| SFVIDCAP file extension | Sony | Sony Vegas Video Capture Format |
| SFW file extension | Seattle FilmWorks | Seattle Film Works Graphics Format |
| SFX file extension | N/A | Self-extracting Compressed Archive Format |
| SFZ file extension | ACE | SoundFont Compressed Audio |
| SG file extension | Micrografx, Inc. | SnapGraphix User |
| SG2 file extension | PG Music Inc. | Band-in-a-Box Audio |
| SG3 file extension | SourceForge.net | ChessDB Game |
| SG4 file extension | PG Music Inc. | Band-in-a-Box Song |
| SGA file extension | Relic Entertainment | Relic Entertainment SGA Archive Format |
| SGAA file extension | Bungie Studios | Aleph One Marathon 2 Save Game Format |
| SGB file extension | Relic Entertainment | Warhammer 40K Dawn Of War Map Format |
| SGCPO file extension | Stenograph, L.L.C. | Case CATalyst |
| SGD file extension | Olof Tjerngren | SameGame Data |
| SGF file extension | Oracle Corporation | StarOffice Document With Graphics |
| SGH file extension | Activision | Guitar Hero 3 Setlist Settings |
| SGI file extension | Silicon Graphics | Silicon Graphics RGB Bitmap Image |
| SGL file extension | N/A | OpenOffice.org/StarOffice Master Document |
| SGM file extension | N/A | Standard Generalized Markup Language IETF Document Format |
| SGML file extension | N/A | Standard Generalized Markup Language Format |
| SGN file extension | Slax | Slax Boot Format |
| SGNGL file extension | Stenograph, L.L.C. | Case CATalyst |
| SGO file extension | N/A | ECU Update |
| SGP file extension | Acoustica | Acoustica MP3 Audio Mixer Format |
| SGR file extension | N/A | SGR Genome Data Format |
| SGSTN file extension | Stenograph, L.L.C. | Case CATalyst |
| SGT file extension | IBM | SSPS Chart Template Format |
| SGU file extension | PG Music Inc. | Band-in-a-Box MIDI |
| SGV file extension | Oracle Corporation | StarOffice StarDraw 2.0 Picture Image |
| SGW file extension | N/A | N-Track Studio Packed Song |
| SGX file extension | IBM | IBM Rational XDE |
| SGZ file extension | Sigza Authentication Systems | Sigza’s SigzaLock Encrypted Format |
| SH file extension | N/A | Unix Bourne Shell (Bash) Format |
| SH2 file extension | HeavenGames | Stronghold 2 Saved Game Format |
| SH3 file extension | N/A | Harvard Graphics 3.0 Presentation |
| SH3D file extension | eTeks | Sweet Home 3D Design Format |
| SH3F file extension | eTeks | Sweet Home 3D Model Library Format |
| SHA file extension | The Open Group | Unix SHAR Archive |
| SHA1 file extension | N/A | SHA-1 Hash Text Format |
| SHA256 file extension | FileVerifier++ | FileVerifier++ SHA-256 Hashes Format |
| SHA512 file extension | N/A | SHA512 Hash Text Format |
| SHADER file extension | id Software | Quake 3 Arena Id Tech 3 Game Engine Shader Format |
| SHADERCACHE file extension | Relic Entertainment Inc. | Space Marine Shader Cache |
| SHADERLIB file extension | Firefly Studios Ltd. | Stronghold 3 Shader |
| SHADOW file extension | Neuber Software | FontTwister Shadow |
| SHADOWINDEXGROUPS file extension | Apple, Inc. | Mac OS X Spotlight |
| SHADOWINDEXTERMIDS file extension | N/A | Mac OS X Spotlight |
| SHAPE file extension | The Dia Developers | Dia Diagram Editor Shape |
| SHAR file extension | N/A | Unix Self Extracting Bourne Shell Archive Format |
| SHB file extension | Microsoft | Microsoft Windows Shortcut Into A Document |
| SHC file extension | Adobe Systems | Adobe Photoshop Contours |
| SHD file extension | Microsoft | Microsoft Windows Shadow Spooler Format |
| SHDC file extension | Bohemia Interactive | ArmA: Armed Assault |
| SHE file extension | CAD Schroer | Medusa 2D CAD |
| SHEET file extension | The Dia Developers | Dia Sheet |
| SHF file extension | PGP Corporation | Pretty Good Privacy (PGP) Share |
| SHFT file extension | Machai Apps | Shift Work Calendar |
| SHG file extension | Microsoft | Segmented Hypergraphics Bitmap Format |
| SHH file extension | Adobe Systems | Adobe Photoshop Shadow Or Highlight Settings Format |
| SHIPSECTION file extension | Kerberos Productions | Sword Of The Stars Ship Data |
| SHIT file extension | N/A | Bourne Shell Server Page |
| SHK file extension | N/A | ShrinkIt Compressed Apple II File Archive |
| SHLB file extension | Mozilla Corporation | Mozilla |
| SHM file extension | Corel Corporation | Corel WordPerfect Shell Macro Library |
| SHMAP file extension | Firefly Studios Ltd. | Stronghold 3 Map |
| SHN file extension | Shorten | Shorten Compressed Audio Format |
| SHO file extension | Show Pro Software | Show Pro Show Flow |
| SHORTCUT file extension | Fanix Software | Asutype Shortcut Format |
| SHOW file extension | Hancom | Hancom Office Hanshow Presentation Format |
| SHP file extension | N/A | ESRI ArcView Shape Format |
| SHPA file extension | Bungie Studios | Marathon 2 Aleph One Shape Format |
| SHR file extension | N/A | Unix Shell Archive Format |
| SHS file extension | Microsoft | Microsoft Windows 95/98 Clipboard Format |
| SHSH file extension | Apple | Apple IPhone ECID SHSH Format |
| SHT file extension | N/A | HTML Server Side Include Format |
| SHTM file extension | N/A | HTML Server Side Include Format |
| SHTML file extension | N/A | HTML Server Side Include Format |
| SHUTDOWNSTALL file extension | Apple, Inc. | Mac OS X Log |
| SHV file extension | Husqvarna Viking | Husqvarna Viking Designer 1 Sewing Machine Embroidery Design Format |
| SHW file extension | Corel | Corel Presentations Slide Show |
| SHX file extension | Autodesk | AutoCAD Shape Compiled Format |
| SHY file extension | Dr. Bootz | ShyFile Encrypted Format |
| SI file extension | Autodesk | AutoDesk Softimage Image Format |
| SIA file extension | Nevercenter Ltd. Co. | Silo 3D Model |
| SIB file extension | Sibelius | Sibelius Music Notation Format |
| SIC file extension | Intuit Inc. | Quicken 2002 Order |
| SID file extension | Valve | Steam Game Data Backup Format |
| SIDB file extension | Apple | ITunes Authorization Data Format |
| SIDD file extension | Apple | Apple ITunes Authorization Data Format |
| SIDN file extension | Apple, Inc. | Apple ITunes Authorization Data |
| SIDX file extension | Smith Micro | StuffIt Archive Index Format |
| SIF file extension | Microsoft | Microsoft Windows NT Setup Installation Format |
| SIG file extension | N/A | Microsoft Office OneNote Signature Format |
| SIGN file extension | Free Software Foundation, Inc. | GNU Privacy Guard |
| SIGNED file extension | Apple, Inc. | Apple Safari |
| SIK file extension | Microsoft Corporation | Microsoft Word Backup |
| SIL file extension | Gurock Software | SmartInspect Log |
| SILK file extension | Microsoft Corporation | Microsoft Excel Symbolic Link Format |
| SILO file extension | Department of Energy (DOE) Advanced Simulation and Computing Initiative (ASCI) | VisIt Hydrodynamical Numerical Simulation Data |
| SIM file extension | SAP | SAP Tutor Format |
| SIM3 file extension | Electronic Arts, Inc. | The Sims 3 |
| SIMG file extension | N/A | Synclavier Disk Image Format |
| SIMPLE file extension | Simple developers | Simple Compiler Source Code |
| SIMS2PACK file extension | Electronic Arts | The Sims 2 Package Format |
| SIMS2SKIN file extension | Electronic Arts, Inc. | Sims 2 Skin |
| SIMS3 file extension | Electronic Arts, Inc. | The Sims 3 Save |
| SIMS3PACK file extension | Electronic Arts | The Sims 3 Game Package Format |
| SIN file extension | Microsoft Studios | Rise Of Nations Campaign Media |
| SINF file extension | Apple, Inc. | Apple IOS Digital Rights Management |
| SIP file extension | Chris S Craig | Scopetrax Compressed Sample |
| SIR file extension | N/A | Bitmap |
| SIS file extension | Symbian | Symbian Installation Format |
| SISDM file extension | Nokia | Nokia Ovi Store Protected Program Format |
| SISX file extension | Symbian | Symbian OS Program Installation Executable Format |
| SISXDM file extension | Nokia | Nokia Ovi Store Protected Program Format |
| SIT file extension | Smith Micro | StuffIt Expander Archive Format |
| SIT! file extension | Smith Micro Software, Inc. | StuffIt Expander Archive Format |
| SIT5 file extension | N/A | StuffIt 5 Archive Format |
| SITD file extension | N/A | StuffIT Archive |
| SITE file extension | Adobe Systems | Adobe GoLive Site Specific Format |
| SITEMAP file extension | Microsoft | ASP .NET Site Map |
| SITES file extension | Apple | Apple IWeb Domain Format |
| SITES2 file extension | Apple | Apple IWeb Domain Format |
| SITHQX file extension | N/A | StuffIt Compressed Archive |
| SITL file extension | Smith Micro Software, Inc. | StuffIt Library |
| SITO file extension | Smith Micro Software, Inc. | StuffIt Translator |
| SITX file extension | Smith Micro | StuffIt Archive Format |
| SIV file extension | Silicon Imaging | Silicon Imaging Video Format |
| SIZ file extension | Oracle Corporation | Oracle 7 Configuration |
| SJ1 file extension | N/A | SEGA SJ-1 DIGIO Image |
| SJAVA file extension | EPFL | Synchronous Java Source Code Format |
| SJC file extension | SourceTec Software Co., LTD | Sothink JavaScript Web Scroller Definition |
| SJD file extension | Nova Development | Scrapbook Factory Deluxe Saved Journal Format |
| SJPG file extension | Oracle Corporation | Sealed JPG |
| SJS file extension | Electronic Arts, Inc. | Simcity 3000 Buildings Add-on |
| SJ_ file extension | Blue Ribbon Soundworks | SuperJAM Audio |
| SK file extension | Apple | Safari Saved Browsing History Format |
| SK1 file extension | sK1 Project | SK1 Vector Drawing Format |
| SK2 file extension | Advanced Chemistry Development | ACD/ChemSketch Drawing Format |
| SKA file extension | N/A | Happy99 Virus |
| SKB file extension | SketchUp Backup Format | |
| SKC file extension | Borland | SideKick For Windows Database Format |
| SKCARD file extension | Borland | Starfish Sidekick Card Format |
| SKD file extension | Autodesk, Inc. | Autodesk Autosketch Drawing Database |
| SKE file extension | Electronic Arts, Inc. | Battlefield Skeleton |
| SKETCH file extension | Bohemian Coding | Sketch Drawing |
| SKF file extension | Autodesk | Autodesk AutoSKETCH Thumbnail Format |
| SKG file extension | Skrooge Development team | Skrooge Data |
| SKI file extension | Motorola | Motorola Mobile Phone Skin Format |
| SKIM file extension | Skim | Skim Notes Format |
| SKIN file extension | Microsoft | Skin Format |
| SKINDEX file extension | N/A | Apple Mail Index Format |
| SKINNEDMESH file extension | Electronic Arts, Inc. | Battlefield Skinned Mesh |
| SKITCH file extension | Skitch | Skitch Graphics Format |
| SKK file extension | Intergraph Corporation | SmartSketch Drawing |
| SKL file extension | Autodesk | Autodesk Maya Skeleton Format |
| SKM file extension | Trimble | SketchUp Materials Format |
| SKN file extension | Nokia | Skin Format |
| SKO file extension | N/A | Sage Accounting Executable |
| SKP file extension | SketchUp Graphic File Format | |
| SKR file extension | N/A | PGP Pretty Good Privacy Private Keyring Format |
| SKS file extension | Eltima Software GmbH. | Show.kit Template |
| SKSE file extension | N/A | The Elder Scrolls V: Skyrim Script Extender Data |
| SKT file extension | Intermorphic | SSEYO Koan |
| SKUDEF file extension | Electronic Arts, Inc. | Command & Conquer Archive Description Package |
| SKV file extension | N/A | Semicolon Separated Values Format |
| SKX file extension | Microsoft | XLANG Schedule Format |
| SKY file extension | Microsoft Corporation | Microsoft Multiplan SYLK Spreadsheet |
| SKYPECHATSTYLE file extension | Skype | Skype Chat Style Format |
| SKYPEEMOTICONSET file extension | Skype | Skype Emoticon Set Format |
| SKZ file extension | SuperKaramba | SuperKaramba Theme Format |
| SL file extension | N/A | Unix Software License Format |
| SL00 file extension | Stripf Software | HLSW Game Server Tool |
| SL01 file extension | Stripf Software | HLSW Game Server Tool |
| SL02 file extension | Stripf Software | HLSW Game Server Tool |
| SL03 file extension | Stripf Software | HLSW Game Server Tool |
| SL05 file extension | Stripf Software | HLSW Game Server Tool |
| SL06 file extension | Stripf Software | HLSW Game Server Tool |
| SL07 file extension | Stripf Software | HLSW Game Server Tool |
| SL08 file extension | Stripf Software | HLSW Game Server Tool |
| SL09 file extension | Stripf Software | HLSW Game Server Tool |
| SL10 file extension | Stripf Software | HLSW Game Server Tool |
| SL11 file extension | Stripf Software | HLSW Game Server Tool |
| SL12 file extension | Stripf Software | HLSW Game Server Tool |
| SL13 file extension | Stripf Software | HLSW Game Server Tool |
| SL14 file extension | Stripf Software | HLSW Game Server Tool |
| SL15 file extension | Stripf Software | HLSW Game Server Tool |
| SL16 file extension | Stripf Software | HLSW Game Server Tool |
| SL17 file extension | Stripf Software | HLSW Game Server Tool |
| SL18 file extension | Stripf Software | HLSW Game Server Tool |
| SL19 file extension | Stripf Software | HLSW Game Server Tool |
| SL20 file extension | Stripf Software | HLSW Game Server Tool |
| SL21 file extension | Stripf Software | HLSW Game Server Tool |
| SL23 file extension | Stripf Software | HLSW Game Server Tool |
| SL24 file extension | Stripf Software | HLSW Game Server Tool |
| SL25 file extension | Stripf Software | HLSW Game Server Tool |
| SL26 file extension | Stripf Software | HLSW Game Server Tool |
| SL27 file extension | Stripf Software | HLSW Game Server Tool |
| SL28 file extension | Stripf Software | HLSW Game Server Tool |
| SL29 file extension | Stripf Software | HLSW Game Server Tool |
| SL30 file extension | Stripf Software | HLSW Game Server Tool |
| SLA file extension | Scribus | Scribus Document Format |
| SLAGZ file extension | Scribus | Scribus Compressed Document |
| SLACKBUILD file extension | Slackware Linux, Inc. | Slackware Linux Script |
| SLB file extension | Autodesk | Autodesk AutoCAD Slide Library |
| SLC file extension | N/A | 3D Systems SLiCe Format |
| SLD file extension | Autodesk | Autodesk AutoCAD Slide Format |
| SLD3 file extension | Microsoft Corporation | Microsoft PowerPoint 3/4 For Mac Slide |
| SLD8 file extension | Microsoft Corporation | Microsoft PowerPoint 98 For Mac Slide |
| SLDASM file extension | Dassault Systemes | SolidWorks Assembly Format |
| SLDBLK file extension | SolidWorks Corporation | SolidWorks Blocks |
| SLDBOMBT file extension | SolidWorks Corporation | SolidWorks BOM Template |
| SLDCLR file extension | SolidWorks Corporation | SolidWorks Colour Palette |
| SLDDRT file extension | Dassault Systemes | SolidWorks General Table Template Format |
| SLDDRW file extension | Dassault Systemes | SolidWorks Drawing Format |
| SLDDWG file extension | SolidWorks Corporation | SolidWorks Drawing 2D Vector Graphics |
| SLDGTOLFVT file extension | SolidWorks Corporation | SolidWorks Geometric Tolerance Style |
| SLDHOLTBT file extension | SolidWorks Corporation | SolidWorks Hole Table Template |
| SLDLFP file extension | SolidWorks Corporation | SolidWorks Library Part |
| SLDM file extension | Microsoft Corporation | Microsoft PowerPoint 2007/2010 Macro-enabled Open XML Slide |
| SLDMAT file extension | SolidWorks Corporation | SolidWorks Material Database |
| SLDPRT file extension | Dassault Systemes | SolidWorks Part Format |
| SLDREG file extension | SolidWorks Corporation | SolidWorks Settings |
| SLDREVTBT file extension | SolidWorks Corporation | SolidWorks Revision Table Template |
| SLDS file extension | Microsoft Corporation | Microsoft PowerPoint 2 For Mac Slide |
| SLDSFFVT file extension | SolidWorks Corporation | SolidWorks Surface Finish Style |
| SLDSTD file extension | SolidWorks Corporation | SolidWorks Drafting Standard |
| SLDTBT file extension | SolidWorks Corporation | SolidWorks General Table Template |
| SLDTM file extension | SDL | SDL Translation Memory Format |
| SLDWELDFVT file extension | SolidWorks Corporation | SolidWorks Weld Style |
| SLDWLDTBT file extension | SolidWorks Corporation | SolidWorks Weldment Cutlist Template |
| SLDX file extension | Microsoft Corporation | Microsoft PowerPoint 2007/2010 Open XML Slide |
| SLE file extension | Sisulizer | Sisulizer Exchange Format |
| SLF file extension | Symantec | Symantec License Format |
| SLG file extension | Dionex Corporation | Chromeleon Audit Trail |
| SLI file extension | Exelis Visual Information Solutions | ENVI Spectral Library |
| SLIB file extension | Synopsys, Inc. | Synopsys Interface Timing Specification Model |
| SLIDESAVER file extension | Apple, Inc. | Mac OS X Screensaver |
| SLIFE file extension | Slife Labs, LLC | Slife Database |
| SLIM file extension | N/A | Slim Script |
| SLIP file extension | Embarcadero Technologies, Inc. | CodeGear Licence |
| SLK file extension | Microsoft | Microsoft Symbolic Link Format |
| SLL file extension | N/A | Static Link Library |
| SLM file extension | Linden Research | Second Life Mesh Asset |
| SLN file extension | Microsoft | Microsoft Visual Studio Solution Format |
| SLNK file extension | SAP AG | SAP Business All-in-One Extension |
| SLO file extension | Pixar | RenderMan Compiled |
| SLOGO file extension | MIT | StarLogo Programming Project Format |
| SLOGT file extension | MIT | StarLogo Template Format |
| SLP file extension | Sisulizer | Sisulizer Project Format |
| SLR file extension | Grassland, Soil & Water Research Laboratory | ArcSWAT Solar Radiation Input |
| SLS file extension | N/A | Image Playlist Format |
| SLS3 file extension | Microsoft Corporation | Microsoft Excel 3 For Mac Template |
| SLS4 file extension | Microsoft Corporation | Microsoft Excel 4 For Mac Template |
| SLS5 file extension | Microsoft Corporation | Microsoft Excel 5 For Mac Template |
| SLS8 file extension | Microsoft Corporation | Microsoft Excel 98 For Mac Template |
| SLST file extension | N/A | Game Data Format |
| SLT file extension | Mozilla | Mozilla Firefox/Thunderbird User Profile Folder Format |
| SLTNG file extension | MIT | StarLogo TNG Project Format |
| SLUPKG-MS file extension | Microsoft | XrML Digital License Package |
| SLV file extension | Infrae | Silva Import And Export |
| SLW file extension | Settler Computer Technologies, Inc. | Settler LITE Data |
| SLX file extension | MathWorks | MathWorks Simulink Model Format |
| SLY file extension | GNU Project | Lilypond Guitar |
| SLZ file extension | Adobe Systems Incorporated | Adobe RoboHelp Screen Layout |
| SM file extension | StepMania | ScriptMaker Script Format |
| SM2 file extension | RHK Technology, Inc. | RHK Technology Proprietary |
| SM3 file extension | DATACAD LLC. | DataCAD Symbol |
| SM4 file extension | RHK Technology, Inc. | RHK Technology Proprietary |
| SMA file extension | N/A | AMX Mod Plugin Source Format |
| SMAF file extension | N/A | SMAF Synthetic Music Mobile Application Format |
| SMALI file extension | Google Android Smali Assembly Language Developer Format | |
| SMB file extension | Autodesk, Inc. | Autodesk Symbol Library |
| SMBP file extension | Amazon.com, Inc. | Mobipocket EBook Secured Auxiliary |
| SMC file extension | N/A | Super Nintendo Game-console ROM Image |
| SMCL file extension | StataCorp LP | Stata Log |
| SMD file extension | N/A | Sega Genesis ROM Emulator Format |
| SMDL file extension | Microsoft Corporation | SQL Server Updated Model |
| SME file extension | Smartsoft | SmartEncryptor Encrypted Archive |
| SMF file extension | N/A | Standard MIDI File Format |
| SMH file extension | Oracle Corporation | Sealed MHT Document |
| SMHT file extension | Oracle Corporation | Sealed MHT Archive |
| SMI file extension | N/A | Microsoft SAMI Subtitles Format |
| SMIL file extension | SYMM Working Group | Synchronized Multimedia Integration Language Format |
| SMK file extension | RAD Game Tools | RAD Video Tools Smacker Compressed Video |
| SML file extension | SYMM Working Group | SMIL Slideshow Presentation |
| SMM file extension | Samna | Ami Pro Macro Format |
| SMO file extension | Gravitysensation.com | Sumotori Dreams Level Format |
| SMOL file extension | Wavefunction | Spartan Molecule Data |
| SMP file extension | N/A | SampleVision Audio Sample Format |
| SMPAK file extension | SuperMemo World sp. z o.o. | SuperMemo UX |
| SMPD file extension | András Belicza | Sc2gears Mouse Print Data Format |
| SMPF file extension | PoseMotion | Sprite Monkey Project |
| SMPO file extension | N/A | Scalado SpeedView Meta Object |
| SMPRF file extension | iolo technologies, LLC. | System Mechanic Microsoft Windows Startup Profile |
| SMPS file extension | LINDO SYSTEMS | LINDO API |
| SMPX file extension | MakeMusic, Inc. | Finale Accompaniment |
| SMR file extension | Überware | Smedge2 Job Settings |
| SMRD file extension | Adobe Systems | Adobe InDesign Format |
| SMS file extension | N/A | Sony Ericsson Exported SMS Format |
| SMST file extension | Adobe Systems Incorporated | Adobe Soundbooth Music Score Toolkit |
| SMT file extension | Samsung | Samsung Mobile Phone Theme Format |
| SMTMP file extension | N/A | Trojan:Win32/FakeSysdef Folder |
| SMV file extension | Smith Micro | VideoLink Saved Mail Video |
| SMW file extension | Creston Electronics, Inc. | SIMPL Windows Source |
| SMWT file extension | Adobe Systems | Adobe InDesign Filter Format |
| SMX file extension | IBM | Rational XDE |
| SMZ file extension | SMath | SMath Studio Compressed Document Format |
| SMZIP file extension | StepMania | StepMania Package Format |
| SN file extension | N/A | Sound Club Editor Compressed Song |
| SN1 file extension | Tom Ehlert | Drive Snapshot First Differential Backup Format |
| SN2 file extension | Tom Ehlert | Drive SnapShot Partial Disk Image Format |
| SN4 file extension | Tom Ehlert Software | Drive SnapShot Partial Disk Image |
| SNA file extension | Tom Ehlert | Drive SnapShot Disk Image Format |
| SNAG file extension | TechSmith | SnagIt Capture Format |
| SNAGITSTAMPS file extension | TechSmith Corporation | SnagIt Archive |
| SNAGPROJ file extension | TechSmith | SnagIt Project Format |
| SNAGSTYLES file extension | TechSmith Corporation | SnagIt Style |
| SNAP file extension | N/A | ZX Spectrum Emulator Mirage Microdrive Snapshot |
| SNAPDOC file extension | Ashampoo GmbH & Co. KG | Ashampoo Snap |
| SNAPFIREPROJECT file extension | Corel Corporation | Corel Snapfire Project |
| SNAPFIRESHOW file extension | Corel | Corel Snapfire Show Format |
| SNAPSHOT file extension | VMware | VMware ThinApp Snapshot Format |
| SNAPX file extension | Snapform | Snapform XML Form |
| SNB file extension | N/A | Shanda Bambook EBook |
| SNC file extension | The Sage Group plc | ACT! E-mail/folder Synchronization |
| SND file extension | N/A | Sound Format |
| SNDA file extension | Bungie Studios | Marathon 2 Aleph One Sound Format |
| SNDCLIPPING file extension | Apple, Inc. | Apple Mac OS X Finder Sound Clip |
| SNDH file extension | N/A | Atari ST Audio |
| SNDR file extension | N/A | Sounder Sound |
| SNDT file extension | N/A | Sndtool Sound |
| SNF file extension | Imaginova Corp. | Starry Night Document |
| SNG file extension | N/A | Song Format |
| SNGW file extension | Capcom Co., Ltd. | Devil May Cry 4 Audio |
| SNI file extension | Interplay Entertainment Corporation | MDK Game Archive |
| SNIPPET file extension | Microsoft | Microsoft Visual Studio Code Snippet Format |
| SNK file extension | Microsoft | Microsoft Visual Studio Strong Name Key Format |
| SNM file extension | N/A | Netscape Communicator E-Mail Or News Messages Index Format |
| SNOOP file extension | N/A | Sun SNOOP Capture |
| SNP file extension | Microsoft | Microsoft Access Report Shapshot Format |
| SNR file extension | IDEAlliance | Mail.Dat Seed Name |
| SNS file extension | Composite Ideas | Save-N-Sync Backup Project Format |
| SNSF file extension | CaitSith2 | SNES Audio Format |
| SNT file extension | Microsoft | Microsoft Windows Sticky Notes Data Format |
| SNU file extension | AVG Technologies (Grisoft) | AVG Anti-Virus |
| SNW file extension | Prof. Friedrich Leisch | Sweave Source |
| SNX file extension | Pi Innovo | PiSnoop Workspace Format |
| SO file extension | N/A | ELF Shared Library Format |
| SO-ABI file extension | AbiSource | AbiWord Plug-in Format |
| SO0 file extension | N/A | Unix Shared Library Format |
| SOA file extension | The Sage Group plc | Sage MAS 90 Accounting Software Data |
| SOAP file extension | N/A | Simple Object Access Protocol Message (SOAP) Message |
| SOB file extension | OpenOffice.org | OpenOffice.org Impress Bimap Styles Format |
| SOC file extension | OpenOffice.org Project Team | Colour Palettes And Various Style Elements |
| SOCIALPHONEBOOK file extension | Google Inc. | Sony Xperia Google Android Contact |
| SOD file extension | id Software LLC | Wolfenstein 3D Spear Of Destiny Game Data |
| SOE file extension | LucasArts Entertainment Company, LLC | Star Wars Shadows Of The Empire |
| SOF file extension | Altera | Quartus II SRAM Object |
| SOI file extension | N/A | MENSI (Trimble) 3D Laser Enhanced 3D Scanner |
| SOL file extension | Adobe Systems | Adobe Flash Shared Object Format |
| SOLIDCONFIG file extension | BioWare | STAR WARS: The Old Republic Launcher Config |
| SOLITAIRESAVE-MS file extension | Microsoft | Windows Solitaire Saved Game Format |
| SOM file extension | Corel Corporation | Corel Paradox Sort Information |
| SON file extension | N/A | Notator SL Audio |
| SONG file extension | Apple, Inc. | System 7 Sound |
| SONIC file extension | Sonic Solutions | DigitalMedia Project Format |
| SOPT file extension | N/A | Synclavier Optical Disk Image Format |
| SOR file extension | Adobe Systems Incorporated | Adobe Flash Media Server System Object |
| SOS file extension | 3am Solutions (UK) Limited | Dynamite VSP Swept Object Style |
| SOU file extension | N/A | Creative Labs SoundBlaster Studio Sound Format |
| SOUNDPACK file extension | Stardock | Stardock SoundPackager Sound Package Format |
| SOUNDS file extension | id Software | Quake 3 Id Tech 3 Sound Definition Format |
| SOUNDSCRIPT file extension | N/A | Rigs Of Rods Sound Script Description |
| SOUNDSTUDIOPRESET file extension | Felt Tip Inc. | Sound Studio Preset |
| SOV file extension | Dimensional Control Systems | 3DCS Advanced Analyzer/Optimizer SOVA Model |
| SOW file extension | Interplay | Renamed ARJ Archive Format |
| SOX file extension | N/A | Unix Sox Native Raw Sound |
| SP file extension | Buchanan Computing | SignPlot Output Format |
| SP1 file extension | Microsoft Corporation | Microsoft Windows XP With Service Pack 1 Installation |
| SP2 file extension | Super Ball 2 | Super Ball 2 Level Format |
| SP3 file extension | NOAA NGS | Microsoft Windows XP With Service Pack 3 Installation Format |
| SP4 file extension | Chris Sawyer | Roller Coaster Tycoon Saved Game |
| SP45 file extension | Solutions Etcetera | SuperCard Player Format |
| SP7 file extension | SAS Institute Inc. | SAS Permanent Utility |
| SP? file extension | Terry A. Davis | LoseThos C+ Source |
| SPA file extension | MikuMikuDance | MikuMikuDance Picture Bitmap Format |
| SPAR file extension | Wavefunction | Spartan Chemical Modeller Output |
| SPARC file extension | Skype | Skype Extra Plug-in Format |
| SPARSEBUNDLE file extension | Apple | Apple Mac OS X Time Machine Dynamic Image Format |
| SPARSEIMAGE file extension | Apple | Apple MAC OS X Sparse Disk Image Format |
| SPARSIMAGE file extension | Apple, Inc. | Mac OS X Image |
| SPAWN file extension | GSC Game World | S.T.A.L.K.E.R. Game |
| SPB file extension | Microsoft | Flight Simulator Mission Format |
| SPC file extension | N/A | PKCS #7 Certificate Format |
| SPD file extension | Oracle | Sealed Acrobat Document |
| SPDATA file extension | Microsoft Corporation | Microsoft Visual Studio |
| SPDB file extension | NNG Kft | IGO Primo Speedcam Database |
| SPDESIGNASAX file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNASMX file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNBAR file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNBOT file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNCONFIG file extension | Microsoft Corporation | SharePoint Designer Configuration |
| SPDESIGNCSS file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNDOCLIB file extension | Microsoft Corporation | SharePoint Designer Design Library |
| SPDESIGNFILE file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNHOMEOP file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNHOMEPG file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNHTML file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNHTT file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNLIST file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNLISTDATA file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNMASTER file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNNAV file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNNOPUB file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNOPEN file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNPICLIB file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNRESX file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNSITEMAP file extension | Microsoft Corporation | SharePoint Designer Site Map |
| SPDESIGNSKIN file extension | Microsoft Corporation | SharePoint Designer Skin |
| SPDESIGNSURVEY file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNTHEME file extension | Microsoft Corporation | SharePoint Designer Theme |
| SPDESIGNTXT file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNUNKNOWN file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNWEB file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNWFDOCLIB file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNXML file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNXOML file extension | Microsoft Corporation | SharePoint Designer |
| SPDESIGNXSLT file extension | Microsoft Corporation | SharePoint Designer |
| SPDF file extension | Oracle | Sealed PDF Document Format |
| SPE file extension | Roper Scientific | WinSpec CCD Capture Format |
| SPEC file extension | N/A | RPM Specification Format |
| SPENTRY file extension | Wavefunction | Spartan Database |
| SPF file extension | Sling Media | SlingPlayer Saved Favourites Format |
| SPFX file extension | Sorenson Media | Squeeze Preset Format |
| SPG file extension | SpeedGuide.net | TCP Optimizer Saved Settings Format |
| SPH file extension | MikuMikuDance | Ribbons Sphere Format |
| SPI file extension | ShadowCraft Technology | ShadowProtect Incremental Disk Changes Format |
| SPIDERSOLITAIRESAVE-MS file extension | Microsoft | Microsoft Spider Solitaire Save Format |
| SPIFF file extension | Joint Photographic Experts Group | SPIFF Still Picture Interchange File Format |
| SPIN file extension | Apple, Inc. | Apple Mac OS X Console Spin Report |
| SPINPUT file extension | Wavefunction | Spartan Job |
| SPJ file extension | Microsoft | Microsoft ICE Panorama Project |
| SPK file extension | New Wave Concepts | Bright Spark Document Format |
| SPKZ file extension | Scribe Software Corporation | Scribe Template |
| SPL file extension | N/A | Macromedia FutureSplash Animator Document Format |
| SPL7 file extension | ABACOM | SPlan Data |
| SPLIT file extension | N/A | Split |
| SPLSP file extension | SmartPLS | SmartPLS Project |
| SPLT file extension | IanB | YDecode Split |
| SPLX file extension | HelloApps | Code Package |
| SPM file extension | Corel Corporation | Corel WordPerfect |
| SPMO file extension | Scalado AB | SpeedView Meta Object |
| SPN file extension | N/A | Spanish Readme |
| SPO file extension | SPSS | SPSS Output Document Format |
| SPP file extension | Serif | Serif PhotoPlus Format |
| SPPACK file extension | N/A | SPPack Sound Sample |
| SPPT file extension | Oracle Corporation | Sealed Microsoft PowerPoint Presentation |
| SPQ file extension | IBM | SPSS Database Query Format |
| SPR file extension | Valve | Half-Life Sprite Format |
| SPREPORTER file extension | Apple, Inc. | Mac OS X System Profiler Reporter |
| SPRG file extension | N/A | Synclavier Program Format |
| SPRITE file extension | SuperTux | SuperTux Sprite Format |
| SPRJ file extension | Microsoft Corporation | Microsoft Application Virtualization Sequencer Project |
| SPRX file extension | N/A | Sony Playstation 3 SPRX Firmware |
| SPS file extension | SPSS | SPSS Proprietary Syntax Format |
| SPSS file extension | IBM | SPSS |
| SPT file extension | N/A | ESPL Programming Format |
| SPU file extension | Atari | Atari Spectrum Bitmap Image Format |
| SPUB file extension | BeLight | BeLight Disc Cover Format |
| SPV file extension | SPSS | SPSS (Statistical Package For The Social Sciences) Analysis Output Format |
| SPW file extension | Quantitative Software Management. Inc. | SLIM-Master Plan Workbook |
| SPX file extension | Xiph.Org | Ogg Vorbis Speex Format |
| SPY file extension | N/A | SEO SpyGlass Project |
| SQ file extension | N/A | Sysquake Program Format |
| SQB file extension | Red Gate | SQL Backup Compact MS SQL Server Backup Format |
| SQD file extension | N/A | Sysquake Session Data Format |
| SQF file extension | Bohemia Interactive | ArmA Script Format |
| SQFS file extension | N/A | SquashFS Bootable Format |
| SQH file extension | DreamCatcher Interactive | Harbinger Game |
| SQL file extension | N/A | Structured Query Language Data SQL Format |
| SQLDATAPROVIDER file extension | DotNetNuke Corp. | DotNetNuke Script |
| SQLITE file extension | SQLite | SQLite Database Format |
| SQLITE-JOURNAL file extension | SQLite Development Team | Mozilla Firefox |
| SQLITE-SHM file extension | SQLite Development Team | SQLite Shared Memory |
| SQLITE-WAL file extension | SQLite Development Team | SQLite Quasi-persistent |
| SQLITE3 file extension | SQLite | SQLite 3 Database Format |
| SQLITE3-JOURNAL file extension | SQLite Development Team | SQLite Temporary |
| SQLITEDB file extension | SQLite | SQLite Database Format |
| SQLITEDB-SHM file extension | SQLite Development Team | SQLite Database Shared Memory |
| SQLJET file extension | The Eclipse Foundation | Eclipse JET SQL Template |
| SQLPROJ file extension | Microsoft | Microsoft Visual Studio SQL Server Project Format |
| SQM file extension | Microsoft | Microsoft Service Quality Monitoring Format |
| SQN file extension | SAS Institute Inc. | SAS Sequential Access |
| SQR file extension | N/A | SQL Structured Query Language Program Format |
| SQS file extension | Bohemia Interactive | Operation Flashpoint Game Script |
| SQU file extension | National Instruments Corporation | LabWindows/CVI Test Executive Toolkit Sequence |
| SQUASHFS file extension | Squashfs | Squashfs-tools Disk Image Format |
| SQX file extension | N/A | SQX Archiver Compressed Archive Format |
| SQY file extension | University of Oxford | Xaira Query |
| SQZ file extension | N/A | Squeeze Project Format |
| SR file extension | Sun Microsystems | Sun Raster Bitmap Graphics Format |
| SR0 file extension | Sony | Sony SecuROM Analysis Format |
| SR2 file extension | Sony | Sony Digital Camera RAW Image Format |
| SR4 file extension | SIR | SIR Database |
| SRA file extension | Sybase Inc. | Powerbuilder Application |
| SRC file extension | N/A | Generally Source Code Format |
| SRCRPM file extension | Red Hat | Red Hat Package Manager Source Format |
| SRD file extension | Sybase Inc. | PowerBuilder Data Window |
| SRE file extension | Microsoft Corporation | Windows CE 5.0 |
| SREP file extension | FreeArc | SuperREP Archive Format |
| SRF file extension | Sony | Sony Digital Camera RAW Image Format |
| SRFMAP file extension | Planetside Software | Terragen Map |
| SRG file extension | Ketron | Ketron Single Registration Format |
| SRI file extension | Nuance Communications, Inc. | Dragon NaturallySpeaking Audio |
| SRJ file extension | Sybase Inc. | PowerBuilder Project |
| SRK file extension | Cryptic Sea | Sub Rosa Client Format |
| SRL file extension | Procedimientos-Uno, S.L. | Arquitienda Local Database |
| SRM file extension | N/A | Super Nintendo ROM Saved Game Emulator Format |
| SRP file extension | N/A | Checkpoint Exported VPN Client Information |
| SRPM file extension | Various Linux developers | Linux Source RPM Package |
| SRQ file extension | Microsoft Corporation | Microsoft Windows Server Unprocessed Request |
| SRR file extension | ReScene | ReScene Data Recovery Archive Format |
| SRS file extension | Microsoft | Microsoft Outlook Server Request Setting Format |
| SRT file extension | N/A | SubRip Video Subtitle Format |
| SRT0 file extension | N/A | Nintendo Wii Animation Format |
| SRU file extension | Sybase Inc. | PowerBuilder User Object |
| SRV file extension | N/A | FBB Initialization |
| SRW file extension | Samsung | Samsung Raw Picture Image Format |
| SRX file extension | N/A | SPARQL Query Results XML Format Result |
| SRZ file extension | The Database Managers, Inc. | DataFlex Source |
| SS file extension | SilverStripe | Scheme Source Code Format |
| SS0 file extension | N/A | GameBoid First Saving Slot |
| SS4 file extension | MODRATEC | SigScribe4 Design |
| SSA file extension | N/A | SubStation Alpha Subtitle Format |
| SSAGE file extension | Microsoft Corporation | Inbound Internet Email Message |
| SSB file extension | SmartSync Software | SmartSync Pro Program Setting |
| SSC file extension | Microsoft | SourceSafe Status Format |
| SSCS file extension | Saropa | Saropa Smart Copy Script |
| SSD file extension | Stardock | Stardock WindowBlinds Skin File List |
| SSD01 file extension | The Open Group | Unix SAS Data Sets |
| SSDL file extension | SmartSound | Sonicfire Pro Music |
| SSE file extension | Avarin Systems Inc. | StrataSearch |
| SSEQ file extension | Nintendo | Nintendo DS Sound Format |
| SSF file extension | Trimble Navigation | Trimble Standard Storage Format |
| SSFSAV file extension | McLeodGaming | Super Smash Flash Saved Game Format |
| SSG file extension | Self Evident Enterprises, LLC. | Single-Step Goal Template |
| SSH file extension | F-Secure | Data Fellows Secure Shell Document |
| SSI file extension | Adobe Systems | HTML With Server Side Includes |
| SSIF file extension | N/A | Blu-ray Stereoscopic Interleaved Movie |
| SSII file extension | Synoptics Ltd | ProReveal Data Format |
| SSIS file extension | Synoptics Ltd | ProReveal Settings Format |
| SSISDEPLOYMENTMANIFEST file extension | Microsoft Corporation | Microsoft Visual Studio Deployment |
| SSIW file extension | Corel Corporation | Corel WordPerfect 4 For Mac Document |
| SSKD file extension | Squidge Software | On Schedule Schedule |
| SSL file extension | Nicolaudie | Sunlight ScanLibrary Format |
| SSL2 file extension | Nicolaudie | Sunlite Suite 2 ScanLibrary Settings Format |
| SSLF file extension | N/A | HLSW Game Server Tool Format |
| SSM file extension | N/A | RealAudio Standard Streaming Metafile |
| SSML file extension | N/A | Speech Synthesis Markup Language Source |
| SSMSSQLPROJ file extension | Microsoft Corporation | Microsoft SQL Server Project |
| SSN file extension | DNsoft | Shutdown Scheduler Shared Notes Data |
| SSND file extension | N/A | Synclavier Sound Format |
| SSO file extension | SourceForge.net | ChessDB Search Options |
| SSP file extension | Axialis Software | Axialis Screensaver Image Format |
| SSS file extension | Stardock | WindowBlinds Substyle Format |
| SSS~ file extension | Stardock Corporation | WindowBlinds Temporary |
| SST file extension | Microsoft | Serialized Certificate Store Format |
| SSU file extension | Microsoft Corporation | Systems Management Server Hierarchy Manager Site Update |
| SSV file extension | Seavus | Seavus Secure Project Format |
| SSW file extension | SETool2 | Sony Ericsson Firmware Update Format |
| SSWF file extension | N/A | Sealed SWF Flash |
| SSX file extension | IBM | IBM Rational XDE |
| SSY file extension | N/A | W32/Sober-AD |
| SSZ file extension | VIT Software, LLC. | Spider Player Skin |
| ST file extension | N/A | Atari Disk Image Format |
| ST0 file extension | National Instruments Corporation | SPICE Status |
| ST1 file extension | National Instruments Corporation | SPICE Status |
| ST2 file extension | National Instruments Corporation | SPICE Status |
| ST3 file extension | National Instruments Corporation | SPICE Status |
| ST4 file extension | Pinnacle Systems, Inc. | Pinnacle Studio 400 Project |
| ST45 file extension | Solutions Etcetera | SuperCard Trial Project Format |
| ST5 file extension | N/A | SBIG CCD Camera ST-x Image |
| ST6 file extension | N/A | SBIG CCD Camera ST-x Image |
| ST7 file extension | N/A | SBIG CCD Camera ST-x Image |
| ST8 file extension | N/A | SBIG CCD Camera ST-x Photo |
| ST9 file extension | National Instruments Corporation | SPICE Status |
| STA file extension | ABAQUS | Abaqus/CAE Information Summary Format |
| STAP file extension | Apple | Apple Soundtrack Pro Project Format |
| STARTUPINFO file extension | Psychology Software Tools | E-Prime 2.0 Startup Info Format |
| STAT file extension | Richard Hughey - Kevin Karplus - Anders Krogh | Statistics |
| STATE file extension | N/A | Windows Photo Gallery User |
| STATES file extension | Stardock Corporation | IconX Preset |
| STATICMESH file extension | Electronic Arts, Inc. | Battlefield Static Mesh |
| STATS file extension | FreeSurfer | FreeSurfer Statistics Format |
| STATUS file extension | Universität Bremen | UDraw(Graph) |
| STB file extension | Autodesk | AutoCAD R2000 Plot Style Table |
| STBOM file extension | Dassault Systèmes S.A. | CATIA Stbom |
| STC file extension | Sun Microsystems | OpenOffice.org Calc Spreadsheet Template Format |
| STD file extension | N/A | SureThing CD Labeler Document Format |
| STDL file extension | Dextronet | Swift To-Do List Database |
| STE file extension | Adobe Systems | Adobe Dreamweaver Backup Site Settings Format |
| STEAMSTART file extension | Valve | Valve Steam Start Format |
| STEP file extension | N/A | ISO-10303 STEP Product Data |
| STF file extension | Microsoft | Microsoft Exchange Server Temporary Format |
| STFX file extension | IK Multimedia Production srl | SampleTank Settings |
| STG file extension | Microsoft | Microsoft ActiveSync Backup Format |
| STH file extension | IBM | Lotus Domino Stash Format |
| STI file extension | N/A | StarOffice Presentation Template Format |
| STIP file extension | IK Multimedia Production srl | SampleTank Instrument Preset |
| STK file extension | Pivot | Personal Stock Monitor Format |
| STL file extension | N/A | Stereolithography Format |
| STM file extension | Microsoft | Exchange Streaming Media Format |
| STMB file extension | N/A | Synclavier Timbre Format |
| STML file extension | N/A | HTML Server Side Include Format |
| STMP file extension | Apple, Inc. | Apple Soundtrack Pro Project |
| STN file extension | Esri | ArcView Geocoding Standardization |
| STN= file extension | Adobe Systems Incorporated | Genuine Fractals STING |
| STO file extension | Ecru Software | PRO100 Project Format |
| STORY file extension | Storyist Software | Storyist Document |
| STORYBOARD file extension | Apple | Interface Builder Storyboard Document |
| STORYISTTHEME file extension | Storyist Software | Storyist Application Theme Format |
| STORYMILL file extension | Mariner Software | StoryMill Project Format |
| STOT file extension | Apple, Inc. | Mac OS Help Index |
| STP file extension | Dassault Systemes | ISO-10303 STEP Product Data Format |
| STPROJ file extension | Samsung | Samsung Theme Designer Project Format |
| STQ file extension | StatSoft, Inc. | StatSoft Statistica Text |
| STR file extension | dataBased Intelligence | DBase Structure List Object Format |
| STRD file extension | Elektron | Octatrack Project |
| STREAMED file extension | id Software LLC | Rage Id Tech 5 Game Language |
| STRG file extension | AAT Holding sp. z o.o. | E-Viewer Recorded Video Copy Backup |
| STRINGS file extension | Apple | Text Strings Format |
| STRK file extension | N/A | Geologger Track Format |
| STRM file extension | Plex Media Center Team | Plex Media Server Settings |
| STRUCT file extension | Microsoft Corporation | Microsoft XPS Document Structure |
| STS file extension | DuoS DSEMU | DuoS DSEMU Saved State Format |
| STSG file extension | SuperTux | SuperTux Saved Game |
| STT file extension | Microsoft | Microsoft Streets & Trips Map Template Format |
| STTPL file extension | Samsung | Samsung Theme Designer Template Format |
| STU file extension | Avid Technology | Pinnacle Studio Video Project Format |
| STUB file extension | Apple, Inc. | Mac OS X Stub Library |
| STUFF file extension | CCP | Eve Online Game Archive |
| STVPROJ file extension | Microsoft Corporation | Microsoft Visual Studio |
| STW file extension | N/A | OpenOffice.org Text Document Template |
| STWM file extension | SuperTux | SuperTux Map Format |
| STX file extension | Pinnacle | Pinnacle Studio Project Format |
| STXT file extension | Oracle Corporation | Sealed Text Document |
| STY file extension | N/A | LaTeX Style Format |
| STYK file extension | Sons of Thunder Software | Stykz Stick Figure Format |
| STYKZ file extension | Sons of Thunder Software | Stykz Animation Format |
| STYL file extension | Stylus team | Stylus CSS Script |
| STYLE file extension | SketchUp Style Format | |
| STYLES file extension | Valve Corporation | Steam Client GUI Resource |
| STZ file extension | Psi | Screamtracker 2 Module Format |
| SU file extension | Procedimientos-Uno, S.L. | SUwin Project |
| SU3 file extension | Rick Tewell | Su3De |
| SU? file extension | N/A | Standard Mail Archive |
| SUA file extension | Naviter d.o.o. | SeeYou Airspace |
| SUB file extension | N/A | DivX Movie Subtitle File Format |
| SUBLIME-BUILD file extension | Sublime HQ Pty Ltd | Sublime Text Build |
| SUBLIME-COMPLETIONS file extension | Sublime HQ Pty Ltd | Sublime Text Completions |
| SUBLIME-KEYMAP file extension | N/A | Sublime Text Keymap |
| SUBLIME-MENU file extension | Sublime HQ Pty Ltd | Sublime Text Menu |
| SUBLIME-MOUSEMAP file extension | Sublime HQ Pty Ltd | Subliem Text Mousemap |
| SUBLIME-PACKAGE file extension | Sublime HQ Pty Ltd | Sublime Text Compressed Extension Package |
| SUBLIME-PROJECT file extension | Jon Skinner | Sublime Text Project Format |
| SUBLIME-SESSION file extension | Sublime HQ Pty Ltd | Sublime Text Session |
| SUBLIME-SETTINGS file extension | Sublime HQ Pty Ltd | Sublime Text Settings |
| SUBLIME-THEME file extension | Sublime HQ Pty Ltd | Sublime Text Theme |
| SUBLIME-WORKSPACE file extension | Jon Skinner | Sublime Text Workspace Settings Format |
| SUC file extension | AceBIT GmbH | Softrans Hello Engines! 2.1 |
| SUCATALOG file extension | Apple, Inc. | Apple Mac OS X Software Update SUCatalog |
| SUCK file extension | SiteSucker | SiteSucker Website Format |
| SUD file extension | Aivosto | Super Project Analyzer Data Format |
| SUF file extension | Peter Selinger | Ccrypt Encrypted Format |
| SUGAR file extension | MacRabbit | Espresso Plug-in Format |
| SUI file extension | Sean Maxwell | StarSplatter User Interface Format |
| SUIT file extension | N/A | Apple Mac OS Font Format |
| SUITE file extension | Stardock Corporation | Stardock WinStyles Suite |
| SUL file extension | N/A | Gfa Raytrace Image |
| SUM file extension | Garmin | Summary Format |
| SUMO file extension | Snap Group | Sumo Paint Image Format |
| SUN file extension | Sun Microsystems | Sun Raster Bitmap Image Format |
| SUN4 file extension | Sun Microsystems, Inc. | SunOS Solaris 4 |
| SUNIFF file extension | Sun Microsystems | Sun TAAC Bitmap Image Format |
| SUO file extension | Microsoft | Microsoft Visual Studio Solution User Options Format |
| SUP file extension | N/A | Subtitle Bitmap Format |
| SUPP file extension | Apple | Apple IOS Format |
| SUPPORTED file extension | Apple, Inc. | MAC OS X |
| SUR file extension | Microsoft Corporation | Freelancer Three Dimensional Collision Zone Data |
| SURF file extension | N/A | Surf 3D Scanner |
| SURFPLACE file extension | Microsoft Corporation | Microsoft Money User Profile |
| SUS file extension | Synergy Accounts | Synergy Accounts Update Script |
| SUT file extension | DENT Instruments | ELITEpro Data Logger |
| SV$ file extension | Autodesk | AutoCAD Autosave Format |
| SV1 file extension | Atari, Inc. | RollerCoaster Tycoon Saved Game |
| SV2 file extension | Atari, Inc. | RollerCoaster Tycoon Saved Game |
| SV2I file extension | Symantec | Symantec Backup Exec System Index Format |
| SV4 file extension | Atari, Inc. | RollerCoaster Tycoon Saved Game |
| SV4CPIO file extension | GnuWin32 Team | System V Release 4 CPIO Archive |
| SV4CRC file extension | GnuWin32 Team | GnuWin32 CPIO Checksum Data |
| SV5 file extension | Lena Games | BigJig Saved Puzzle Format |
| SV6 file extension | Atari | RollerCoaster Tycoon 2 Saved Game Format |
| SV8 file extension | Atari, Inc. | RollerCoaster Tycoon |
| SVA file extension | Sharp | Sharp Manga Browser Comic Format |
| SVB file extension | StatSoft, Inc. | Statistica Macro |
| SVC file extension | Microsoft | Microsoft Visual Studio ASP.NET WCF Web Service Format |
| SVCLOG file extension | Microsoft Corporation | Microsoft Visual Studio Diagnostics |
| SVCMAP file extension | Microsoft Corporation | Windows Communication Foundation WCF Reference |
| SVD file extension | Roland | Roland Patch Format |
| SVE file extension | Simutrans | Simutrans Format |
| SVF file extension | JTAG | Simple Vector Format |
| SVG file extension | Adobe Systems | XML Based Vector Graphics Format |
| SVGZ file extension | Adobe Systems | Compressed SVG (Scalable Vector Graphics) Format |
| SVH file extension | Terminal Reality | Fly! Simulated Vehicle Specification |
| SVI file extension | Samsung | Samsung Video Format |
| SVL file extension | SecurStar | Scramdisk Volume |
| SVM file extension | OpenOffice.org Project Team | OpenOffice.org StarView Metafile |
| SVN file extension | N/A | Personal Paint Slovenian Language User Interface |
| SVN-BASE file extension | The Apache Project | Apache Subversion Base Format |
| SVN-WORK file extension | CollabNet | CollabNet Subversion Cache Format |
| SVO file extension | StatSoft, Inc. | STATISTICA Macro |
| SVP file extension | Atomix Productions | Virtual DJ Visualization Effects |
| SVQ file extension | N/A | Roland Keyboard Midi Sequence |
| SVR file extension | N/A | Compressed Virtual World |
| SVS file extension | N/A | GpSP Game Boy Advance Emulator Saved State Format |
| SVT file extension | Runic Games | Torchlight Saved Game Format |
| SVW file extension | Ohio State University | SpecView Format |
| SVX file extension | N/A | Sound File (Amiga 8SVX Format) |
| SVZ file extension | Actual Code Ltd. | Savez |
| SW file extension | N/A | 16-bit Audio Sound Raw Signed PCM Data Format |
| SW0 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SW1 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SW2 file extension | Softwrap | Softwrap License Format |
| SW3 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SW4 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SW5 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SW6 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SW7 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SW8 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SW9 file extension | National Instruments Corporation | SPICE Sweep Operations Output |
| SWA file extension | N/A | Adobe Shockwave Music Format |
| SWAV file extension | N/A | Nintendo DS Audio Format |
| SWB file extension | Adobe Systems Incorporated | Adobe Photoshop |
| SWC file extension | Adobe Systems | Adobe Flash Component Distribution Format |
| SWD file extension | Adobe Systems | Adobe Flash Debug Format |
| SWDB file extension | Apple, Inc. | ClarisWorks 3 And 4 Database |
| SWE file extension | Electronic Arts, Inc. | NHL Ice Hockey 2002 Required |
| SWEB file extension | Borne Programming and Spider Applications | SpiderWEB Document |
| SWF file extension | Adobe Systems | ShockWave Flash, Animated Vector Format For The Internet |
| SWF2 file extension | Adobe Systems Incorporated | Flash |
| SWFL file extension | Adobe Systems Incorporated | Shockwave Flash |
| SWG file extension | N/A | SWAG Pascal Snippets (SWAG Reader) |
| SWGR file extension | Apple, Inc. | ClarisWorks Version 3/4 Drawing |
| SWI file extension | SWiSHzone.com | SWiSH Format |
| SWIDTAG file extension | N/A | Software Identification Tag |
| SWIFT file extension | Apple, Inc. | Apple Swift Programming Language Source Code |
| SWISH-E file extension | The Swish-e Project | SWISH-E |
| SWITCH file extension | Egress Software Technologies | Egress Switch Package Format |
| SWITCHBOARD file extension | Adobe Systems Incorporated | Adobe SwitchBoard Server |
| SWJ file extension | Dassault Systemes | SolidWorks Journal Format |
| SWK file extension | StudyWorks | StudyWorks Save Format |
| SWL file extension | Adobe Systems Incorporated | Macromedia Flash Format [Alternate] |
| SWLT file extension | SBSH Software LTD | SafeWallet |
| SWM file extension | Microsoft | Windows Imaging Format Split Archive Format |
| SWN file extension | Bram Moolenaar | Vim Temporary |
| SWO file extension | Bram Moolenaar | Vim Temporary |
| SWP file extension | Bill Joy | Swap Format |
| SWQ file extension | Grassland, Soil & Water Research Laboratory | SWAT Stream Water Quality Input |
| SWS file extension | TIBCO Software Inc | S-PLUS Workpsace |
| SWSS file extension | Apple, Inc. | ClarisWork Spreadsheet |
| SWT file extension | Adobe Systems | Swift Generator Template Format |
| SWTAG file extension | Adobe Systems Incorporated | Adobe Creative Suite Software Tag |
| SWV file extension | Microsoft | Microsoft Sidewinder Game Voice Settings Format |
| SWW file extension | Ubisoft Entertainment | ANNO Saved Game Format |
| SWZ file extension | Adobe Systems | Adobe Flash Player Signed RSL Format |
| SX file extension | Dipl.-Phys.-Ing. Ralf Wirtz | SimplexNumerica Data Format |
| SXC file extension | Sun Microsystems | OpenOffice.org 1.0 Spreadsheet Format |
| SXD file extension | Oracle | OpenOffice/StarOffice Drawing |
| SXE file extension | N/A | ProfiCAD Document |
| SXG file extension | OpenOffice.org | OpenOffice.org Master Document Format |
| SXI file extension | Sun Microsystems | OpenOffice.org Presentation Format |
| SXL file extension | N/A | Sealed Excel Worksheet |
| SXLS file extension | N/A | Sealed Excel Spreadsheet |
| SXLSX file extension | N/A | Sealed Microsoft Excel 2007 Worksheet |
| SXM file extension | N/A | OpenOffice.org 1.0 Math Format |
| SXML file extension | N/A | Sealed XML Document |
| SXS file extension | SAS Institute Inc. | SAS Stat Studio Module Source Code |
| SXT file extension | Propellerhead Software | Propellerheads Reason 2 NN-XT Sound Format |
| SXV file extension | N/A | Action Repeater Macro |
| SXW file extension | Sun Microsystems | OpenOffice.org Writer Document Format |
| SXX file extension | SAS Institute Inc. | SAS Stat Studio Module Executable |
| SY file extension | Dipl.-Phys.-Ing. Ralf Wirtz | Simplexety Data Format |
| SY0 file extension | MicroVision Development, Inc. | WordExpress |
| SY1 file extension | Daichi Laboratory | Synth 1 Patch |
| SY3 file extension | Harvard Graphics | Harvard Graphics Symbol Format |
| SY7 file extension | Trafficware Ltd. | Synchro Studio 7 Output |
| SYB file extension | Microïds | Syberia II Game Archive Format |
| SYC file extension | N/A | Sniffer Capture |
| SYD file extension | Systat Software Inc. | SYSTAT Data |
| SYG file extension | Systat Software Inc. | SYSTAT Graph |
| SYH file extension | N/A | Synchomatic Instrument Format |
| SYK file extension | Microsoft Corporation | Microsoft Excel Symbolic Link Format |
| SYLK file extension | Microsoft | Microsoft Excel For Mac Symbolic Link Format |
| SYM file extension | N/A | Symbols Library Format |
| SYN file extension | David Billen | Synthesis Audio Format |
| SYNC file extension | Apple, Inc. | Apple ColorSync |
| SYNCDB file extension | Apple, Inc. | ITunes Saved Contact Database |
| SYNDARTICLE file extension | N/A | Paralllels Desktop |
| SYNK5LICENCE file extension | Decimus Software, Inc. | Synk 5 Licence |
| SYNKLICENCE file extension | Decimus Software, Inc. | Synk Licence |
| SYNU file extension | N/A | Synthetic Universe Image Format |
| SYP file extension | N/A | SYP Source |
| SYS file extension | Microsoft | System Format |
| SYS-OLD file extension | Red Hat, Inc. | Cygwin Terminfo |
| SYSK file extension | Red Hat, Inc. | Cygwin Terminfo |
| SYSTEM file extension | The Vega Strike Team | Vega Strike Virtual System Format |
| SYV file extension | Write Brothers, Inc. | Outline 4D |
| SYW file extension | N/A | Yamaha SY-85/SY-99 Wave Format |
| SYX file extension | N/A | MIDI System Exclusive Message |
| SY_ file extension | Microsoft | Korg Dw8000 Compressed Format |
| SY~ file extension | Corel Corporation | CorelDRAW |
| SZ file extension | Nullsoft | Winamp Skin Format |
| SZ3 file extension | Psi | ScreamTracker V3 |
| SZA file extension | ISD Software und Systeme GmbH | HiCAD NeXt Construction |
| SZF file extension | Deutsche Automobil Treuhand GmbH | SilverDAT II Data Exchange Format |
| SZP file extension | PKWARE, Inc. | SecureZIP Policy |
| SZS file extension | N/A | Mario Kart Wii Game Archive Format |
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