| Extension | File Type | Files scanned | Contributor |
| S | Digital Micrograph Script | 11 | |
| S | Nitpicker flow | 565 | |
| S00 | MEKA savestate | 5 | |
| S01 | Expert Witness compression Format SMART disk image | 15 | |
| S10W | S10 WebAlbums project | 7 | |
| S1M | Yamaha EX5 waveforms format | 3 | |
| S1V | Yamaha EX5 voices format | 3 | |
| S2 | Stranded II Mapfile | 13 | Josef Schneider |
| S20 | S20 RAM snapshot format | 2 | |
| S2A | SEAL 2 Application | 4 | |
| S2K | Sasami Script subtitles | 8 | |
| S2M | The Settlers 2 Map | 11 | |
| S2MA | StarCraft 2 Map data | 40 | |
| S2MH | StarCraft 2 Map Header | 36 | |
| S2ML | StarCraft 2 Map Localization | 152 | |
| S2QH | StarCraft 2 Localization Header | 10 | |
| S2QL | StarCraft 2 Unit Localization | 10 | |
| S3D | SEAM 3D Project | 109 | |
| S3D | Shadowgrounds 3D model | 19 | |
| S3D | Spazio3D drawing | 72 | BrainSoftware |
| S3I/SMP | Scream Tracker/Digiplayer sample | 11 | |
| S3M | Scream Tracker 3 module | 25 | Dr.Ryo(TM) |
| S3O | Spring Engine 3D model | 49 | |
| S4MI | skinner4moto module | 9 | |
| S8THEME | Start8 menu Theme | 4 | |
| S98 | PC88/PC9801 sound logs rip | 74 | |
| SA | Sonic Arranger module | 16 | |
| SA2 | Surprise! AdLib Tracker 2.0 module | 36 | |
| SAB | Just Cause game data archive | 2 | |
| SAC | Adobe Shared Asset Catalog | 4 | |
| SAC | Sac lossless compressed audio | 8 | |
| SACRED2SAVE | Sacred 2 save game | 2 | |
| SAD | Black and White sounds data | 4 | |
| SAD | SAm Disk image | 2 | |
| SAF | Helix Stronghold Encrypted file | 4 | |
| SAF | Standard Archive Format | 9 | |
| SAH | SETI@Home Classic results | 2 | |
| SAH | SETI@Home Classic work unit | 6 | |
| SAH | SETI@Home working unit data | 13 | |
| SAK | Postal game data Archive | 12 | |
| SAM | AMI Pro / Word Pro document | 67 | |
| SAM | Samurize package | 6 | |
| SAM | Sequence Alignment/Map format (gen) | 19 | |
| SAM | Sequence Alignment/Map format (with header) | 18 | |
| SAMI/SMI | SAMI captions | 15 | |
| SAP | SAP Thomson disk image | 2 | |
| SAP | Serif AlbumPlus album | 2 | |
| SAP | Slight Atari Player music format | 53 | |
| SAR | SAPCAR CAR compressed archive | 4 | |
| SAR | SAPCAR SAR compressed archive (v2.x) | 6 | |
| SAR | Squeak package | 6 | |
| SAR | Streamline compressed archive | 6 | |
| SAS7BDAT | SAS v8+ data | 28 | |
| SAT | ACIS Solid Model | 32 | |
| SAT | SAdT music composer module/song | 8 | |
| SAT | SatHawk data file | 11 | |
| SAV/SPV | American's McGee's Alice Saved Game File | 26 | .Cryorb |
| SAV | Anacreon savegame | 4 | |
| SAV | Arx Fatalis Saved Game | 4 | .Cryorb |
| SAV | Assassins Creed Syndicate save game | 10 | |
| SAV | Assassins Creed Unity save game | 26 | |
| SAV | Birth of The Empire / Federation savegame | 3 | |
| SAV | Chaser Savegame | 134 | dr Angelo Amoruso |
| SAV | Daemon Tools Pro disk image | 2 | |
| SAV | Datel Max Drive (for GameCube) save state | 2 | |
| SAV | Diggles Saved Game File | 24 | .Cryorb |
| SAV | FDM downloads data | 4 | |
| SAV | FarCry (demo) saved game | 3 | |
| SAV | GTKWave Saved session (deprecated) | 12 | |
| SAV | Golden Land 2 Saved Game File | 8 | .Cryorb |
| SAV | Half-Life 2 savegame | 6 | |
| SAV | IDL binary format save file | 24 | |
| SAV | Independence War 2: Edge of Chaos save game | 86 | |
| SAV | Infinity Engine Save game (v1.0) | 292 | Sam. |
| SAV | Lego Loco save game | 8 | |
| SAV | Majesty 2 saved game | 2 | |
| SAV | MegaZeux Save (v1.0x) | 2 | |
| SAV | Mount and Blade save game | 13 | |
| SAV | OpenTTD savegame | 10 | |
| SAV | PASW Statistics Data | 8 | |
| SAV/QUZ/QTZ | Quetzal Z-machine Save format | 3 | |
| SAV | Return To The Roots save game | 2 | |
| SAV | SPSS for Windows Data | 70 | |
| SAV | SPSS for Windows Data (IBM) | 12 | |
| SAV | Sanity: Aiken's Artifact Saved Game | 14 | .Cryorb |
| SAV | Secrets Can Kill saved game | 4 | |
| SAV | Simon Tatham's Portable Puzzle Collection savegame | 8 | |
| SAV | SpellForce 2 save game | 110 | fenixproductions |
| SAV | The Witcher 3: Wild Hunt game save | 2 | |
| SAV | TradeWinds 2 savegame | 2 | |
| SAV/POW | Windows NT Registry Hive (SAV/POW) | 4 | |
| SAV | Yu-Gi-Oh! Duel Monsters World Championship savegame | 3 | |
| SAV | no$gba Nintendo Gameboy Advance emulator backup | 2 | |
| SAVE | Doom 3 Savegame | 18 | |
| SAVE | Prey save game | 50 | fenixproductions |
| SAVE | id Software Doom 3 savegame | 4 | |
| SAZ | Fiddler Session Archive Zip | 9 | |
| SB | Frostbite SuperBundle | 14 | |
| SB | SBX SpinnerBaker eXtractor compressed archive | 3 | |
| SB | Scratch project | 17 | |
| SB2 | Scratch 2.0 project | 23 | |
| SB2 | SerialBox serials numbers package | 6 | |
| SBC | SBC compressed archive | 7 | |
| SBC | Space Engineers Components | 10 | |
| SBF | SBF game data container | 2 | |
| SBGF | Grapher Graph | 4 | |
| SBI | Sound Blaster Instrument audio | 2 | |
| SBI | Spybot-S&D "malware" informations | 9 | |
| SBJ | Superbase Project | 24 | |
| SBK | Emu Sound Font (v1.0) | 17 | |
| SBK | SCC Blaffer NT Instrument Kit | 2 | |
| SBL | Limbo Symbol table | 9 | |
| SBM | SCC Blaffer NT Music | 2 | |
| SBMI | Space Engineers ModInfo | 7 | |
| SBOX | sBOX meta-file format | 2 | |
| SBP | SCC Blaffer NT PSG Instrument | 2 | |
| SBP | Superbase Program (var 1) | 31 | |
| SBP | Superbase Program (var 2) | 221 | |
| SBP | Superbase Program (var 3) | 3 | |
| SBPF | Small Business Publisher document | 5 | |
| SBQ | Superbase Query definition | 4 | |
| SBS | SCC Blaffer NT SCC Instrument | 2 | |
| SBT | Duxbury Scrub Table | 48 | |
| SBV | Superbase form | 36 | |
| SBV | Superbase form definition | 38 | |
| SBW | Savings Bonds Wizard data | 17 | |
| SBX | SeqBox container (gen) | 6 | |
| SBX | SeqBox container (v1) | 24 | |
| SBZ | ShowBiZ project | 4 | |
| SC | IRIS Showcase drawing / presentation | 20 | |
| SC | SuperCollider Class | 14 | |
| SC | sc Spreadsheet Calculator spreadsheet | 6 | |
| SC2 | SimCity 2000 save game | 9 | |
| SC2REPLAY | StarCraft 2 game replay | 35 | |
| SC4 | Creative Nomad voice audio | 3 | |
| SC4 | SimCity 4 Saved game | 4 | |
| SC5 | Chris Sawyer's Locomotion Scenario | 3 | |
| SC6 | RollerCoaster Tycoon 2 scenario | 21 | |
| SC68 | sc68 soundchip music | 109 | |
| SC7/SC8/SCC | MSX BASIC Graphics bitmap (screen 7-8-12) | 3 | |
| SCC | Scenarist Closed Caption data | 5 | |
| SCC | Visual SourceSafe control file (var 1) | 8 | |
| SCC | Visual SourceSafe control file (var 2) | 8 | |
| SCD | Agfa/Matrix SCODL bitmap | 30 | |
| SCD | SCD Square Enix Sound Container File | 2 | |
| SCDOC | SpaceClaim Document | 7 | |
| SCEN | Caligari TrueSpace Scene (v2.x) | 5 | |
| SCENE | 3D Master Scene | 7 | |
| SCENE | Sculpt 3D Scene | 5 | |
| SCF | ChemWindow Standard Chemistry File | 4 | |
| SCF | DNA Sequence Chromatogram | 134 | |
| SCF | Double Commander Shortcuts | 4 | |
| SCF | VIA setup configuration file | 4 | |
| SCF | Windows Explorer Command Shell file | 6 | |
| SCG | Scidb game moves info | 2 | |
| SCH | DProtel for Windows schematic | 12 | |
| SCH | EAGLE File Format schematic (v6+) | 27 | |
| SCH | EAGLE schematic | 26 | Renan (aka Wizard) |
| SCH | KiCad Schematics | 27 | |
| SCH | MicroSim PSpice schematic | 36 | |
| SCH | OrCAD SDT schematic | 4 | |
| SCH | P-CAD schematic | 13 | |
| SCH | Personal CAD PC-CAPS Database | 6 | |
| SCH | Qucs schematic (v0.0.x) | 100 | Eduardo |
| SCHDOC | Protel for Windows schematic capture (binary) | 55 | |
| SCHEME | Programmer's Notepad Scheme | 33 | |
| SCHEME | Programmer's Notepad Scheme (UTF-8) | 5 | |
| SCHLIB | Protel Schematic Library editor binary v1.2-2.0 | 461 | fengdaolong |
| SCHREPX | DevExpress Scheduler Report layout | 22 | |
| SCI | Scidb game data | 2 | |
| SCL | FrontDesigner Scale setting | 8 | |
| SCL | Sinclair TR-DOS disk image | 6 | |
| SCM | GIMP Script-Fu Script | 22 | |
| SCM | Samsung TV channels list | 3 | |
| SCM | ScreenCam video | 7 | |
| SCM/SCX | StarCraft Map | 101 | Kyosuke Aoki |
| SCN | Children of the Nile Scenario | 16 | |
| SCN | FMS Scenery | 52 | |
| SCN | Orbiter scenario | 45 | |
| SCN | Pinnacle Studio Scene | 11 | |
| SCN | Savara Scenario | 9 | |
| SCN | Scidb player/event/site/annotator data | 2 | |
| SCN | Sean Connolly module | 3 | |
| SCN | Softimage Scene | 79 | |
| SCN0 | Wii Texture Animation | 2 | |
| SCNTOC | Softimage Scene TOC | 80 | |
| SCO | Csound Score | 5 | |
| SCP | Adorage Script | 115 | | NEW! |
| SCP | Alpha Four Script | 10 | |
| SCP | SuperCard Pro flux image | 2 | |
| SCPT | Compiled AppleScript script | 12 | |
| SCPT | Fetch Script | 4 | |
| SCR | A-10 Tank Killer Screen | 12 | |
| SCR | CA-Compete! Script | 7 | |
| SCR | Sean Conran module | 23 | |
| SCR | Turbo Silver v3 Script | 6 | |
| SCR | Windows screen saver | 51 | |
| SCREEM | SCREEM project | 8 | |
| SCRIPT | Aegis Animator Script | 14 | | NEW! |
| SCRIPT | Aegis VideoSEG Script | 4 | |
| SCRIPT | AutoIt script | 13 | |
| SCRIPT | Scala Multimedia Script (v2.0) | 13 | |
| SCRIPTTERMINOLOGY | AppleScript Terminology | 6 | |
| SCRIVX | Scrivener XML document | 24 | |
| SCRPT | Genesis - The Third Day Script | 11 | |
| SCT | Form Memo MS Visual FoxPro 7 | 556 | Nicola Marangon |
| SCUT | Easy Cut Studio project | 12 | |
| SCW | Movie Magic Screenwriter document | 6 | |
| SCX | Form MS Visual FoxPro 7 | 554 | Nicola Marangon |
| SCZ | Wingz script | 18 | |
| SD | ESPS Sampled Data | 2 | |
| SD2 | Sound Designer II audio | 3 | |
| SDA | Self-Dissolving compressed Archive | 10 | |
| SDAT | Nintendo DS Sound Data | 8 | |
| SDATA | MusicMaker Song Data | 21 | |
| SDB | Pegasus SPS encoded audio | 12 | |
| SDB | SuperMap World - AvisMap GIS Data Base | 10 | Kieran O'Donnell |
| SDB | Windows Shim Database (v2) | 68 | |
| SDB | Windows Shim Database (v3) | 25 | |
| SDC | ArcGIS geospatial and attribute data | 13 | |
| SDC | StarCalc spreadsheet | 23 | |
| SDD | CBM .prg Studio Screen Designer Data | 4 | |
| SDD | StarDraw drawing | 20 | |
| SDEF | Scripting Definition | 6 | |
| SDF | Ground Control II: Operation Exodus game data archive | 2 | |
| SDF/SDO | IEEE DASC Standard Delay Format | 24 | |
| SDF/SDO | IEEE DASC Standard Delay Format (with rem) | 31 | |
| SDF | Kawai music score | 17 | |
| SDF | Microsoft Speech Definitions File | 4 | |
| SDF | PlayStation Sprite Editor project File | 4 | |
| SDF | SQL Server CE Edition database | 4 | |
| SDF | SQL Server Compact Edition 4 database | 22 | Bryan DeBois |
| SDF | Simple Data Format | 2 | |
| SDI | ArcGIS spatial and attribute indexes | 9 | |
| SDI | System Deployment Image | 3 | |
| SDINSTALL | Speckie Dictionary Installation | 5 | |
| SDLPPX | SDL Trados Studio Project Package | 8 | |
| SDLPROJ | SDL Trados Studio Project | 11 | |
| SDLXLIFF | SDL Trados XLIFF Localization data | 16 | |
| SDO | DB/TextWorks Database Deferred Update Directory | 7 | |
| SDP | Session Description Protocol | 4 | |
| SDP | Session Description Protocol (with rem) | 4 | |
| SDR | Dell System Information | 12 | |
| SDR | SmartDraw document | 13 | |
| SDT | Siemens mobile theme | 4 | |
| SDT | SmartDraw template | 2049 | |
| SDTID | SecurID Soft Token | 9 | |
| SDW | StarOffice StarWriter document | 36 | |
| SDW | StarWriter 2.x Document | 30 | |
| SDX | CaptiveWorks satellite channel database | 4 | |
| SDX | Sample DUMP Exchange audio | 7 | |
| SDX | SatcoDX channel list | 4 | |
| SDXML | SimpleDiagrams diagram | 29 | |
| SDZ | Spring Engine Zipped mod | 7 | |
| SE1 | Swiss Ephemeris data | 22 | |
| SEA | Mac Stuffit Self-Extracting Archive | 12 | |
| SEARCH-MS | Microsoft Vista Saved Search | 5 | |
| SEARCHCONNECTOR-MS | Windows Search Connector | 5 | |
| SEE | Sound Effect Editor for PSG (original) | 2 | |
| SEE | Sound Effect Editor for PSG (truncated) | 2 | |
| SEE | Sound Effect Editor format (v3) | 2 | |
| SEEXPL | Spec Explorer results | 10 | |
| SEG | PolyPlot Segments data (v3.0) | 16 | |
| SEG | SEG-2 data | 4 | |
| SEM | SEM Snapshot | 2 | |
| SEN/BA | Scifer Archiver compressed Binary Archive | 3 | |
| SEP | ChemSep project | 32 | |
| SEQ | CinemaScope Sequence | 4 | | NEW! |
| SEQ | Cyber Paint Sequence | 26 | |
| SEQ | Music-X Sequence | 8 | |
| SEQ | PlayStation Sequence data format | 2 | |
| SER | SER format video | 6 | |
| SES | Cool Edit / Audition Session | 5 | |
| SESSION | Session Manager Firefox Backup | 11 | Stef |
| SESX | Adobe Audition Session | 4 | |
| SET | Alpha Four record Set | 7 | |
| SET | CP Backup Setup (v7.x) | 4 | |
| SET | Hitec Aurora 9 saved model | 12 | |
| SEV | SevenUp bitmap | 2 | |
| SEW | Janome (New Home) Sewing Machine stitch | 22 | |
| SEX | SExtractor configuration | 24 | |
| SF | IRCAM Sound Format audio (MIPS DECstation) | 2 | |
| SF | IRCAM Sound Format audio (MIPS SGI) | 2 | |
| SF | IRCAM Sound Format audio (NeXT) | 2 | |
| SF | IRCAM Sound Format audio (SUN le) | 2 | |
| SF | IRCAM Sound Format audio (SUN native) | 2 | |
| SF | IRCAM Sound Format audio (VAX be) | 2 | |
| SF | IRCAM Sound Format audio (VAX native) | 4 | |
| SF | JAR Signatures File | 5 | |
| SF2 | Standard SoundFont | 21 | |
| SFARK | sfArk compressed SoundFont | 15 | |
| SFARR | SynthFont project | 25 | |
| SFB | PlayStation 3 Disc data | 4 | |
| SFC | GEMPACK data management info | 4 | |
| SFD | Mozilla Spam Filter Definition | 8 | |
| SFD | Sofdec video | 6 | |
| SFD | Spline Font Database | 24 | |
| SFF | Elecbyte M.U.G.E.N. sprites | 4 | |
| SFF | Standard Flowgram Format | 5 | |
| SFF | Structured Fax Format bitmap | 13 | |
| SFK | Sound Forge Peak Data File | 2 | |
| SFL | Agon game data archive | 2 | |
| SFL/SFP/SFT | LaserJet Soft Font | 19 | |
| SFPACK | SFPack compressed SoundFont | 32 | |
| SFS/SQUASHFS | SquashSF image file (big endian) | 3 | |
| SFS/SQUASHFS | SquashSF image file (little endian) | 8 | |
| SFS | sfxr Sample | 4 | |
| SFT | ChiWriter Screen Font | 14 | |
| SFT | Microsoft App-V Sequencer SFT | 3 | |
| SFVIDCAP | Sony Foundry Video Capture project | 15 | |
| SFW | Seattle FilmWorks / PhotoWorks photo (SFW93) | 25 | Richard H. Jones |
| SFW | Seattle FilmWorks / PhotoWorks photo (SFW94) (generic) | 519 | Richard H. Jones |
| SFW | Seattle FilmWorks / PhotoWorks photo (SFW98) | 1426 | Richard H. Jones |
| SFW | Seattle FilmWorks / PhotoWorks photo (Uncompressed SFW94) | 5 | Richard H. Jones |
| SFX | Self-Extracting LHA Archive | 13 | |
| SFX | SoundFX module | 37 | |
| SFX2 | SoundFX 2 module | 44 | |
| SFZ | SFZ Sample definition | 7 | |
| SFZ | SFZ Sample definition (with rem) | 7 | |
| SFZ | SFzip SoundFont compressod archive | 5 | |
| SG4/SG3 | Scid game moves info | 2 | |
| SGA | SGA game data archive | 19 | |
| SGF | Smart Game Format | 21 | |
| SGF | Somera Graphic Format | 3 | |
| SGF | Sonique skin | 31 | |
| SGI | Silicon Graphics 24bit compressed bitmap | 21 | |
| SGI | Silicon Graphics bitmap (generic) | 10 | |
| SGM/SGML | EAD - Encoded Archival Description | 19 | |
| SGPBPRJ | SGP Baltie Project | 14 | |
| SGPG | SGP Model Group | 7 | |
| SGRIDDLER | SGriddler Paint-by-Number puzzle | 154 | |
| SGT | Microsoft DirectMusic Segments Type | 8 | |
| SGT | SPSS Graphic Template | 47 | |
| SGZ | Seekable GZIP disk image format | 3 | |
| SH/SH~ | IBM Storyboard Story | 31 | |
| SH | Linux/UNIX shell script | 11 | |
| SH3 | Harvard Graphics presentation (v3.x) | 11 | |
| SH3D | Sweet Home 3D design (generic) | 24 | Joerg Jenderek |
| SHAPE | Dia shape | 257 | |
| SHARC | Simple Highspeed Archiver compressed archive | 2 | |
| SHEET | Dia sheet | 12 | |
| SHFB | Sandcastle Help File Builder project | 14 | |
| SHFBPROJ | Sandcastle Help File Builder Project | 20 | |
| SHG | Segmented Hypergraphics bitmap | 74 | |
| SHIPSECTION | Swords of the Stars Ship | 4 | |
| SHK | NuFX archive | 20 | |
| SHN | Shorten lossless compressed audio | 15 | |
| SHO | ShroomPlayer module | 26 | |
| SHP | ArcView Shape | 82 | |
| SHP | Printmaster Shape bitmap | 5 | |
| SHPROJ | Visual Studio Shared Code project | 9 | |
| SHPROJ | Visual Studio Shared Code project (UTF-8) | 16 | |
| SHPRST | LuSH-101 global Preset | 57 | |
| SHR/SHAR/SHA | shar SHell self-extracting aRchive | 8 | |
| SHS | Shell Scrap object | 68 | |
| SHTMBR | LuSH-101 Timbre preset | 209 | |
| SHV | Viking Designer 1 embroidery file | 6 | FILExt |
| SHV | Viking embroidery data disk | 2 | |
| SHW | CorelSHOW presentation | 3 | |
| SHW | ETC Show | 3 | |
| SHW | Harvard Graphics presentation (v2.x) | 15 | |
| SHW | MagicQ Show | 10 | |
| SHW | WordPerfect Slide Show | 17 | |
| SHX | ArcView DataBase Index | 82 | |
| SHX | AutoCAD Compiled Shape (Bigfont) v1.0 | 8 | ptweasel |
| SHX | AutoCAD Compiled Shape (Unifont) | 6 | ptweasel |
| SHX | AutoCAD Shape | 6 | |
| SHX | Motorola Flash Superfile | 6 | |
| SI4/SI3 | Scid game data | 2 | |
| SIA | Silo 3D model (ascii) | 8 | |
| SIAG | Siag spreadsheet | 30 | |
| SIAG | Siag spreadsheet (with rem) | 59 | |
| SIARD | SIARD format | 11 | |
| SIB | ShipInBottle compressed file | 4 | |
| SIB | Sibelius Music - Score | 18 | |
| SIB | Silo 3D model (binary) | 55 | |
| SID | LizardTech MrSID photo | 16 | |
| SID | Real C64 SID tune | 16 | |
| SID | SIDPLAY Info | 5 | |
| SID2 | Sidmon II module | 57 | |
| SIF | SkyOS Installation File | 15 | |
| SIF | Swift Interchange File V2 | 3 | |
| SIF | Swift Interchange File V2 (UTF-8) | 6 | |
| SIF | Synfig project | 7 | |
| SIG | IDA Signatures | 14 | |
| SIG | Panda Signature file system | 2 | |
| SIG | SpyBot-Search-and-Destroy 1.2 Signature File | 79 | Roberto 'rbnet' Bolli |
| SIG | a-squared Anti-Malware signature | 126 | Scrapie |
| SIG | rdiff signature | 3 | |
| SIM | ITI-SIM Model | 88 | TBeu |
| SIM | SAP Itutor tutorial | 5 | |
| SIMP | Software Ideas Modeler Project | 5 | |
| SIMP | Software Ideas Modeler Project (encrypted) | 2 | |
| SIMS2PACK | The Sims Compacted Resource file | 20 | |
| SIMS3PACK | The Sims 3 game package | 8 | |
| SIMSS | Software Ideas Modeler Style Set | 9 | |
| SIMT | Software Ideas Modeler Template | 22 | |
| SIS | EPOC Installation package (rel. 2,3,5) | 27 | |
| SIS | EPOC Installation package (rel. 6) | 6 | |
| SISX | Symbian Series 3 Installation file | 12 | |
| SIT | Stuffit compressed archive | 12 | |
| SIT | Stuffit compressed archive (var.2) | 9 | |
| SITE | GoLive Website project | 4 | |
| SITX | Stuffit X compressed archive | 17 | |
| SIX | DEC SIXEL Graphic bitmap | 6 | |
| SJAM | SuperJAM! song | 4 | |
| SK | Skencil drawing | 31 | |
| SK1 | sK1 vector graphic | 9 | |
| SKC | ISIS sketch | 10 | |
| SKCHR | SketchChair document | 18 | |
| SKD | AutoSketch Drawing | 17 | |
| SKEIN | Skein replay data | 5 | |
| SKEL | World of Warcraft model Skeleton | 49 | Wayne Woods |
| SKETCH | Bohemian Coding Sketch drawing (JSON based) | 8 | |
| SKETCH | Bohemian Coding Sketch drawing (SQLite based) | 9 | |
| SKF | skincrafter skin | 16 | |
| SKI | Motorola phone skin info | 9 | |
| SKIN | World of Warcraft model Skin | 78343 | Wayne Woods |
| SKL | Hondata S-Manager calibration | 18 | |
| SKL | League Of Legends Skeleton | 2 | |
| SKL | WinLIFT skin | 15 | |
| SKM | STarKos tune | 16 | |
| SKM | Skale Tracker module | 14 | |
| SKN | Blaze Media Pro Skin | 13 | |
| SKN | Eternity Engine Skin | 2 | |
| SKN | MoonShell2 skin | 2 | |
| SKN | Photono-Software Stealther Skin | 5 | |
| SKN/FHS | RoboHelp / FlashHelp skin | 6 | |
| SKN | StormFront skin | 14 | |
| SKN | TiEmu Skin (v2.00) | 7 | |
| SKN | Virtual TI v2.x emulator skin | 7 | |
| SKP | SketchUp model | 67 | |
| SKR/GPG/PGP | Pretty Good Privacy (PGP) Private/Secret Keyring | 7 | |
| SKR/GPG/PGP | Pretty Good Privacy (PGP) Private/Secret Keyring (v2) | 7 | |
| SKR/GPG/PGP | Pretty Good Privacy (PGP) Private/Secret Keyring (v3) | 7 | |
| SKR/GPG/PGP | Pretty Good Privacy (PGP) Private/Secret Keyring (v4) | 7 | |
| SKS | Creature House Expression Skeletal Stroke | 22 | |
| SKS | STarKos song | 45 | |
| SKS | Show.kit template | 9 | |
| SKY | SKY compressed archive | 3 | |
| SKYT | SKYT/Drifters Packer song | 5 | |
| SLA | Scribus document | 23 | |
| SLB | AutoCAD Slide Library | 28 | |
| SLD | AutoCAD Slide | 5 | |
| SLD | Styled Layer Descriptor | 153 | |
| SLD | XnView Slideshow Data | 5 | |
| SLDASM | SolidWorks Assembly | 26 | Alessandro Cappelletti |
| SLDDRW | SolidWorks Drawing | 24 | |
| SLDPRT | SolidWorks (generic) | 39 | |
| SLDPRT | SolidWorks 2001 Component | 21 | Alessandro Cappelletti |
| SLE | Surfplan kite project | 14 | |
| SLK | SYLK - SYmbolic LinK data | 11 | |
| SLN | Alpha Four Search List | 2 | |
| SLN | Microsoft Visual Studio Solution (generic) | 53 | |
| SLN | Microsoft Visual Studio Solution (generic, Unicode) | 12 | |
| SLN | Microsoft Visual Studio Solution v7.00 | 157 | |
| SLN | Microsoft Visual Studio Solution v8.00 | 38 | |
| SLN | Microsoft Visual Studio Solution v9.00 | 8 | |
| SLOGO | StarLogo project | 110 | |
| SLP | Age of Empires Graphics | 2 | |
| SLTNG | StarLogo TNG Project | 12 | |
| SLTX | MATLAB Simulink model Template | 18 | |
| SLX | MATLAB Simulink model | 36 | |
| SLZ | SLZ compressed data | 2 | |
| SM | SMath Studio worksheet | 57 | |
| SM | StepMania step file | 11 | |
| SMA | SMAC compressed data | 5 | |
| SMALI | Smali assembly source | 347 | Dave Dugal |
| SMC | Super Nintendo game - ROM Image | 4 | |
| SMD | MicroMap map data | 18 | |
| SMD | Sega Genesis / Megadrive Rom Image | 21 | Piwi |
| SMD | Spring Map Definition | 12 | |
| SMD | Valve Studio Model Data | 10 | |
| SMDLPROJ | SQL Server Report Model Project | 6 | |
| SME | Samsung Kies Messages backup | 4 | |
| SMENT | StarMade Entity | 18 | |
| SMF | 3D World Studio mesh | 74 | |
| SMF | Scrull Music File | 2 | |
| SMF | SkinMagic Skin | 10 | |
| SMF | SmartCAM manufacture data | 23 | |
| SMF | Spring Engine Map | 16 | |
| SMI | Lotus Smart Icon | 20 | |
| SMI/SMO | Siemens archived SMS messages | 4 | |
| SMI/SMIL | Synchronized Multimedia Integration Language | 16 | |
| SMK | Smacker movie/video | 39 | Alex Martin |
| SMM | Smart Install Maker project | 4 | |
| SMOD | Future Composer v1.0-v1.3 module | 123 | |
| SMOL | Spartan molecule data | 55 | |
| SMP | Dirk Bialluch TPU samples | 3 | |
| SMP | Novastorm Media audio | 3 | |
| SMP | SmartMusic Performance | 7 | |
| SMP | Turtle Beach SampleVision audio | 16 | |
| SMP | Ulead Gallery | 2 | |
| SMP | Ulead Photo Impact Presets | 9 | |
| SMPD | Sc2gears Mouse Print Data | 2 | |
| SMT | Memo File Apollo Database Engine | 54 | Knuth Konrad |
| SMT | Spring Engine Tile | 16 | |
| SMUFI | Picatune soundtrack | 20 | |
| SMUS/SONG | SMUS IFF Simple Musical Score | 46 | |
| SMV | SigmaTel Motion Video | 10 | |
| SMV | Snes9x movie capture | 5 | |
| SMW | SIMPL Windows source | 63 | |
| SMW | SuperMap World - AvisMap GIS data | 8 | Kieran O'Donnell |
| SMX | SysMetrix skin | 11 | |
| SMZIP | StepMania music package | 18 | |
| SN | Sound Club module | 26 | |
| SN1 | Drive SnapShot Disk Image (additional parts) | 3 | |
| SN2 | Sound Club 2 module | 28 | |
| SN4/SN3 | Scid player/event/site/round data | 2 | |
| SNA | Drive SnapShot Disk Image | 2 | |
| SNA | Oricutron Snapshot | 6 | |
| SNA | WinAPE Snapshot (generic) | 6 | |
| SNA | WinAPE Snapshot (v1) | 2 | |
| SNA | WinAPE Snapshot (v2) | 2 | |
| SNA | WinAPE Snapshot (v3) | 2 | |
| SNAG | SnagIt capture | 16 | |
| SNAGPROF | Snagit Profile | 11 | |
| SNAPPY | Snzip compressed (comment-43 format) | 15 | |
| SNAPPY | Snzip compressed (snappy-in-java format) | 15 | |
| SNAPPY | Snzip compressed (snappy-java format) | 15 | |
| SNB | S-Note document | 16 | |
| SNB | Shanda Bambook eBook | 5 | |
| SNC | Sonarc compressed RAW PCM audio | 6 | |
| SND | A-10 Tank Killer Sound | 2 | |
| SND | Dalet Sound format audio (old) | 4 | |
| SND | DataShow sounds/music | 3 | |
| SND | DeskMate Sound | 8 | |
| SND | Elecbyte M.U.G.E.N. sound | 3 | |
| SND | Magnetic Sound | 2 | |
| SND | Quattro Pro Sound | 3 | |
| SND | SoundTool audio | 2 | |
| SND | The Music Studio Sound (Atari ST) | 4 | |
| SND | The Music Studio Sound (PC) | 10 | |
| SNDH | Atari SoundHeader music | 2 | |
| SNDT | SndTool sound/audio | 14 | |
| SNF/TRC | Sniffer capture | 6 | |
| SNF | Starry Night Document | 25 | |
| SNG | DeskMate song | 86 | |
| SNG | GoatTracker chiptune | 27 | |
| SNG | Korg Song file | 3 | |
| SNG | RJP1 / Vectordean module | 99 | |
| SNG | Scriptable Network Graphics | 7 | |
| SNG | Synder SNG-Player module | 66 | |
| SNG | Synder Tracker module | 17 | |
| SNG | The Music Studio Song (Atari ST) | 12 | |
| SNG | The Musical Enlightment Song | 4 | |
| SNK | Strong Name Key | 17 | |
| SNL | EGrid32 form snippet | 2 | Elias Montoya |
| SNM | Netscape Mail Message | 12 | |
| SNM | Smush Animation format (new) | 11 | |
| SNOOP | snoop verbose trace | 29 | |
| SNP | ADAMEm Snapshot | 3 | |
| SNP | B-EM Snapshot | 3 | |
| SNP | Elkulator Snapshot | 2 | |
| SNP | JS Mocha Snapshot | 13 | |
| SNP | Microsoft Access report Snapshot | 27 | |
| SNP | Mocha Snapshot | 9 | |
| SNP | WinAPE recorded session (simple) | 2 | |
| SNP/SNAP | XRoar Snapshot | 2 | |
| SNR | WinAPE recorded session (full) | 2 | |
| SNS | SNS-HDR project | 8 | |
| SNSF/SNSFLIB | SNSF Super Nintendo Sound Format rip | 7 | |
| SNSX | SNS-HDR 2.x project | 11 | |
| SNT | Amnesia: T.D.D. sound entity | 10 | |
| SNX | SNX Snapshot | 2 | |
| SNZ | Snzip compressed (snzip format) | 6 | |
| SOBJ | Caligari TrueSpace 3D object (v2.x) | 17 | |
| SOF | Quartus II Project | 12 | |
| SOF | RESOF compressed archive | 4 | |
| SOFT | Simple Omnibus in Text Format | 22 | |
| SOK | Koustracker module | 34 | |
| SOL | Flash Shared Object file | 5 | |
| SOL | Sierra On-Line King Quest 8 audio | 4 | |
| SOL | Sierra On-Line audio | 4 | |
| SOLITAIRESAVE-MS | Microsoft Solitaire Saved game | 6 | |
| SON | Beam Software SIFF sound | 3 | |
| SON | SBStudio II song | 4 | |
| SON | Spruce DVDMaestro subtitles | 8 | |
| SONG | AudioSauna Song | 6 | |
| SONG | Bars and Pipes Professional song | 12 | |
| SONG | The Music Studio Song (Amiga) | 28 | |
| SOR | Paradox sort definition | 3 | |
| SOR | SOR OTDR data | 16 | |
| SOR | SOR OTDR data (var 2) | 7 | |
| SOR | Shot Online Resource | 3 | |
| SOS | Adventure SOS compiled walkthrough | 13 | |
| SOS | SOSI map data | 21 | |
| SOS | SOSI map data (UTF8) | 5 | |
| SOU | SBStudio II sounds | 15 | |
| SOUND | The Music Studio Sound (Amiga) | 5 | |
| SOX | SoX native uncompressed PCM audio | 3 | |
| SP | PEPE 2D constant interval DataSet | 2 | |
| SP | SignPlot traffic sign data | 2 | |
| SP | Spectrum emulator snapshot | 3 | |
| SP3 | NGS orbital format SP3 (positions only) | 3 | |
| SP3 | NGS orbital format SP3 (with velocity) | 2 | |
| SPA | Spectral Data file | 22 | |
| SPARC | Skype Extra | 18 | |
| SPC | Crimson Editor language specification file | 11 | |
| SPC | Datalink SoundScape | 9 | |
| SPC | SpchComp encoded speech/audio | 11 | |
| SPC/SPS | Spectrum 512 compressed/smooshed bitmap | 5 | |
| SPC | Super Famicon/Super NES audio dump | 243 | |
| SPD | Bitstream Speedo font | 36 | |
| SPD | K-Spreadsheet (v2) | 3 | |
| SPD | K-Spreadsheet (v3/4) | 5 | |
| SPD | Microsoft Speech Data | 5 | |
| SPD | Samsung Pen Document | 13 | |
| SPD | Sprite Pad Data (v2.0) | 13 | |
| SPE | Princeton Instruments WinView CCD image format | 6 | |
| SPE | SIMPSON binary format | 4 | |
| SPE | SPSS Extension | 7 | |
| SPECCY | Speccy snapshot | 5 | Ryan Jones |
| SPF | Jose SciEditor Project | 2 | |
| SPF | StruCad 3D model | 6 | |
| SPFX | Squeeze Presets | 6 | |
| SPH/NIST | NIST Sphere waveform audio | 8 | |
| SPIDERSOLITAIRESAVE-MS | Microsoft Spider Solitaire Saved game | 10 | |
| SPIF | Streaming Progressive Image Format bitmap | 4 | |
| SPIFF/SPF | SPIFF Still Picture Interchange File Format bitmap | 7 | |
| SPINPUT | Spartan spinput format | 6 | |
| SPJ | BeepFX Sound Effects Project | 2 | |
| SPJ | BeepFX Sound Effects Project (v2) | 2 | |
| SPJ | DigiTrax Sound Project | 4 | |
| SPJ | Microsoft ICE Stitch Project | 8 | |
| SPJ | Microsoft ICE Stitch Project (v2) | 4 | |
| SPJ | PhotoStage Slideshow project | 17 | |
| SPJ | Site Publisher Project | 6 | |
| SPK/ARC | Acorn Spark Archive | 10 | |
| SPK | KiXtart SPK notation format | 12 | |
| SPK | Monkey Forest spectrum data | 12 | |
| SPK | Sparkup book | 5 | |
| SPK | Synology Package | 20 | |
| SPL | Digitrakker Sample | 2 | |
| SPL | Infinity Engine spell (v1) | 2 | |
| SPL | Infinity Engine spell (v2.0) | 788 | Sam. |
| SPL | Raw print data | 2 | |
| SPL | SOPROL Sound Programming Language module | 9 | |
| SPL | Splint compressed data | 7 | |
| SPL | sPlan schematic (generic) | 3 | |
| SPL7 | sPlan 7.0 schematic | 12 | |
| SPM | Spektrum DX serie transmitter settings | 24 | |
| SPM | StoneTracker Module | 30 | |
| SPMO | SpeedView Meta Objects | 9 | |
| SPO | SPSS Output Document | 40 | |
| SPO | Spores saved game | 32 | |
| SPP | Serif PhotoPlus Picture | 14 | fenixproductions |
| SPP | Superplan spreadsheet (v2.x) | 2 | |
| SPP | Superplan spreadsheet (v3.x) | 13 | |
| SPR | Brother PowerNote spreadsheet | 13 | |
| SPR | Cosmigo Pro Motion SPRites sequence/animation | 2 | |
| SPR | DataShow Sprite | 2 | |
| SPR | ID Software Sprite format | 9 | |
| SPR | Live for Speed data | 7 | |
| SPR | Mini Office Spreadsheet | 3 | |
| SPR | Psion SH3 Spreadsheet | 3 | |
| SPR | Sangduck Sprite | 2 | |
| SPR | Sprint document | 6 | |
| SPR | Sprite Artist Sprite | 5 | |
| SPRITE | SuperTux Sprite | 160 | |
| SPS | SharkPort file | 8 | |
| SPS | Spectrum 512 Anispec animation | 2 | |
| SPS | StoneTracker Samples | 30 | |
| SPS | Winamp Signal Processing Studio DSP-Effect | 4 | |
| SPT | SpeedTree format | 16 | |
| SPU | SPU Playstation log rip | 31 | |
| SPV | SpacEyes3D Viewer project | 3 | |
| SPVCHAIN | Multibit Bitcoin blockchain | 4 | |
| SPX | Spectrum 512 Extended bitmap | 2 | |
| SPX | Speex encoded audio | 11 | |
| SQF | FreeMotion Flash movie | 5 | |
| SQL | phpMyAdmin SQL dump | 5 | |
| SQLITE/SQLITE2 | SQLite 2.x database | 6 | |
| SQLITE/SQLITE3 | SQLite 3.x database | 7 | |
| SQLITE | SQLite Zipvfs compressed database | 2 | |
| SQLITE-WAL | SQLite Write-Ahead Log (little endian) | 7 | Joerg Jenderek |
| SQLPLAN | Microsoft SQL Server execution Plan | 10 | |
| SQLPROJ | Visual Studio SQL Server Project | 13 | |
| SQM | Operation Flashpoint mission | 8 | |
| SQM | Windows Live Messenger Log file | 53 | |
| SQR | SQR script | 14 | |
| SQX | SQX compressed archive | 10 | |
| SQZ | SQWEZ compressed archive | 3 | |
| SQZ | Squeeze compressed archive | 13 | |
| SQZ | Squeeze project | 7 | |
| SR | srank compressed data | 3 | |
| SR2 | sr2 compressed data | 17 | Label |
| SR5 | Graph Saurus bitmap (5) | 2 | |
| SR7/SR8/SRS | Graph Saurus bitmap (7/8/S) | 3 | |
| SREP | SuperREP compressed data | 3 | |
| SRF | FileLocator Pro Search Criteria (gen) | 25 | |
| SRF | FileLocator Pro Search Criteria (v3.1) | 14 | Meigel |
| SRF | FileLocator Pro Search Criteria (v6.5-7.5) | 24 | |
| SRF | FileLocator Pro Search Criteria (v8.0) | 10 | |
| SRF | Garmin vechicle images file | 9 | |
| SRF | SRF map | 12 | |
| SRF | Terragen Surface Map | 2 | |
| SRF | You Don't Know Jack game data archive | 2 | |
| SRL | Strelok Scope Reticle | 5 | |
| SRR | ReScene Release data | 11 | |
| SRS | Outlook Send-Receive Settings | 9 | |
| SRT | SubRip subtitles | 28 | |
| SRT | SubRip subtitles (UTF-16) | 22 | |
| SRT | SubRip subtitles (UTF-8) | 17 | |
| SRW | Samsung Raw image | 20 | |
| SS | First Choice SpreadSheet | 6 | |
| SS | PHAST Sufficient Statistics | 4 | |
| SS | Speedy System module | 5 | |
| SS1 | Mini Office II SpreadSheet | 13 | |
| SSA | Children of the Nile campaign | 6 | |
| SSA | Empire Earth 1 game data | 11 | Josef Schneider |
| SSC | StepMania Song | 7 | |
| SSC | StepMania Song (with rem) | 3 | |
| SSDL | ADO.NET Store Schema Definition Language | 9 | |
| SSF | Enable SpreadSheet | 9 | |
| SSF | Mortal Kombat serie game data archive | 2 | |
| SSF | Quartus Simulator Setting File | 20 | |
| SSF/SSFLIB | SSF Saturn Sound Format rip | 41 | |
| SSF | STL Stream Format | 3 | |
| SSF | Trimble Standard Storage File GPS data | 10 | |
| SSML | Speech Synthesis Markup Language | 12 | |
| SSMSASPROJ | Microsoft SQL Server Analysis Services Project | 4 | |
| SSMSMOBILEPROJ | SQL server Management Studio Mobile Project | 6 | |
| SSMSMOBILEPROJ | SQL server Management Studio Mobile Project (UTF-8) | 5 | |
| SSP | Axialis Professional Screensaver Producer project | 2 | |
| SSP | ScreenSwift Screen Saver Project | 4 | |
| SSP | SmartSniff Saved Packets | 15 | Scrapie |
| SSP | Solitaire Setty Project | 2 | |
| SSS | Coda Style Sheet | 9 | |
| SST | AVHRR satellite bitmap | 30 | |
| SST | Sonic Scenarist SubTitles | 16 | |
| SST | Stream SubText Player subtitles | 8 | |
| SST | Yamaha Session Style | 68 | |
| SSTS | Stream SubText Script subtitles | 5 | |
| SSW/CRY | SETool encrypted firmware | 14 | |
| SSX | Kega Fusion Save State | 3 | |
| ST* | GetDataBack Scan trace | 4 | |
| ST0 | VirtuaNES savestate | 8 | |
| ST11 | Spectrum Sound Tracker 1.1 chiptune | 59 | |
| ST13 | Spectrum Sound Tracker 1.3 chiptune | 3 | |
| ST1H/MEM | Fanuc parameters file | 5 | |
| ST2 | RCA Studio 2 binary dump cartridge | 82 | |
| ST2 | SoundTrakker128 tune | 279 | |
| ST26 | Soundtracker module (v2.6) | 2 | |
| ST3 | Star 3 MIDI Karaoke file | 12 | |
| ST6 | ST-6 astrocamera bitmap | 3 | |
| ST6 | ST-6 compressed astrocamera bitmap | 13 | |
| STA | BrMSX savestate | 3 | |
| STA | Complete Statistical System spreadsheet (v5) | 3 | |
| STA | MAME Save State | 6 | |
| STAGE | 2D Fighter Maker 2nd stage data | 10 | |
| STAPL | Standard Test and Programming Language | 20 | |
| STARTLET | Start++ script | 3 | |
| STAT | Weather data summary report | 98 | |
| STATE | BlastEm snapshot | 2 | |
| STATE | atari++ state | 6 | |
| STB | AutoCAD Plot Style Table (name based) | 8 | Peter Glasl |
| STC | StoneCracker S401 compressed | 2 | |
| STC | StoneCracker S403 compressed | 2 | |
| STC | StoneCracker S404 compressed | 73 | |
| STD | Atari Works Database | 2 | |
| STD | PROMT document | 6 | kif aka AC |
| STD | STAAD.Pro project data | 11 | |
| STD | SureThing CD Labeler document | 35 | |
| STD/SUM/TXT | wi-scan log | 7 | |
| STENCYL | Stencyl game data | 9 | |
| STF | 3D World Studio material | 14 | |
| STF | STuetzerbach Format | 9 | |
| STF | SuperTux Font | 12 | |
| STF | Windows Setup Table File | 18 | |
| STG | STG SNMP Traffic Grapher settings | 4 | |
| STH | Sisthema Personal System | 4 | |
| STJ | STJ Stereoscopic bitmap | 6 | |
| STK/TIF/TIFF | MetaMorph Stack | 7 | |
| STK | Stockholm format | 8 | |
| STL | ATF STereoLithography (binary) | 4 | |
| STL | Alibre Design STereoLithography (binary) | 4 | |
| STL | AutoCAD STereoLithography (binary) | 3 | |
| STL | Blender exported STereoLithography (binary) | 12 | |
| STL | EBU Subtitling data exchange format | 2 | |
| STL | Geomagic Studio STereoLithography (binary) | 2 | |
| STL | Inventor STereoLithography (binary) | 5 | |
| STL | Meshmixer STereoLithography (binary) | 5 | |
| STL | MoI STereoLithography (binary) | 7 | |
| STL | Rhinoceros STereoLithography (binary) | 6 | |
| STL | STereoLithography (ASCII) | 28 | |
| STL | STereoLithography (binary) (gen) | 12 | |
| STL | SkyOS Style | 3 | |
| STL | Spruce subtitles | 2 | |
| STL | Spruce subtitles (with rem) | 2 | |
| STL | SuperTux Level | 209 | |
| STL | SuperTux Level (with rem) | 28 | |
| STL | netfabb STereoLithography (binary) | 7 | |
| STM | GNU TeXmacs Scheme | 5 | |
| STM/STX | Scream Tracker module | 16 | |
| STM/DTM | Smart Software Time Manager Data | 2 | |
| STM | State Transition Diagram model (Prosa) | 20 | |
| STMX | XMILE Model | 29 | |
| STO | Infinity Engine Store (v1.0) | 255 | Sam. |
| STO | Infinity Engine Store (v1.1) | 8 | |
| STO | Infinity Engine Store (v9.0) | 226 | Sam. |
| STO | PRO100 Furniture design project | 632 | Stas Resenchuk |
| STORMREPLAY | Heroes of the Storm replay | 6 | |
| STORYBOARD | Interface Builder Storyboard document | 21 | |
| STP/STEP/P21 | ISO-10303 STEP model data | 324 | |
| STP | SignalTap II capture | 13 | |
| STP | Spectrum Sound Tracker Pro 2 chiptune | 5 | |
| STP | Steem Patch | 15 | |
| STPROJ | Sapphire Project | 22 | |
| STRC | AY STRC chiptune | 4 | |
| STREAM | Shockwave Stream | 6 | |
| STRM | Nintendo DS audio Stream | 138 | |
| STS | Atari Works Spreadsheet | 5 | |
| STSG | SuperTux Saved Game | 10 | |
| STT | STT disk image | 2 | |
| STU | Pinnacle Studio Video Project | 8 | |
| STUFF | EVE Online Game Contents archive | 3 | |
| STW | Atari Works Wordprocessor document | 3 | |
| STW | STATISTICA Workbook | 8 | |
| STW | STW disk image | 2 | |
| STWM | SuperTux World Map | 20 | |
| STWM | SuperTux World Map File (with rem) | 15 | |
| STX | EditPlus Syntax file | 13 | |
| STX | PASTI disk image | 2 | |
| STX | StockChartX data | 2 | |
| STY | Beyond Words Composer Style | 8 | |
| STY | Lattice Diamond Strategy | 10 | |
| STY | Microsoft DirectMusic Style | 12 | |
| STY/STX | Microsoft Word for DOS Style sheet | 32 | |
| STY | Ventura Publisher Style Sheet | 104 | |
| STY | Ventura Publisher Style sheet (GEM) | 77 | |
| STY | Yamaha General Style | 1611 | |
| STYLE | SuperJAM! Style | 5 | |
| STZ | stz compressed data | 4 | |
| SUA | Tim Newport-Peace's Special Use Airspace Format | 13 | |
| SUB | DVDSubtitle subtitles | 5 | |
| SUB | Elaborate Bytes/SlySoft CloneCD CDImage (subchannel-data) | 11 | THE LoW |
| SUB | MPSub subtitles | 7 | |
| SUB | Philips SVCD Designer subtitles | 5 | |
| SUB | SubViewer 1.0 subtitles | 9 | |
| SUB | SubViewer 2.0 subtitles | 21 | |
| SUBLIME-MOUSEMAP | Sublime Text Mouse settings | 6 | |
| SUBLIME-PROJECT | Sublime Text Project | 6 | |
| SUBLIME-SNIPPET | Sublime Text Snippets | 178 | |
| SUBLIME-WORKSPACE | Sublime Text Workspace | 5 | |
| SUI | Mac font | 8 | |
| SUI | Simple User Interface Toolkit library | 6 | |
| SUITE | Theme Manager / WinStyles theme | 18 | |
| SUN | SUNTronic module | 13 | |
| SUNSYNTH | SunVox Synthesizer | 59 | |
| SUNVOX | SunVox module | 140 | |
| SUO | Microsoft VisualStudio Solution User Options | 153 | |
| SURF | 3D-XplorMath surf format | 3 | |
| SV2I | Symantec LiveState recovery image | 7 | |
| SV4 | RollerCoaster Tycoon Saved game | 11 | |
| SV6 | RollerCoaster Tycoon 2 Saved game | 18 | |
| SVAR | SVArTracker module | 3 | |
| SVC | SupervisionCam Camera Settings | 23 | Scrapie |
| SVCINFO | Saved WCF Configuration Information | 23 | |
| SVCINFO | WCF Configuration Snapshot | 10 | |
| SVD | CMSIS System View Description format | 25 | |
| SVD | Roland Fantom audio | 2 | |
| SVD | Semi-Virtual Diskette disk image (v1.5.x) | 14 | |
| SVD | Semi-Virtual Diskette disk image (v2.0.x) | 35 | |
| SVF | Simple Vector Format (generic) | 19 | |
| SVF | Simple Vector Format (v1.10) | 11 | |
| SVF | Simple Vector Format (v2.00) | 3 | |
| SVF | SmartVersion File archive | 5 | |
| SVG | 3D Draw SVG image | 3 | |
| SVG | Scalable Vector Graphics (var.1) | 525 | |
| SVG | Scalable Vector Graphics (var.2) | 7 | |
| SVG | Scalable Vector Graphics (var.3) | 604 | |
| SVG | SuperView Graphics bitmap | 7 | |
| SVH | Solace Virtual Helios disk image | 2 | |
| SVM | StarView Metafile | 5 | |
| SVM | StarView Metafile (old) | 9 | |
| SVN | Solace Virtual Northstar disk image | 4 | |
| SVQ | Roland MC-80 music sequence | 6 | |
| SVQ | Roland XP-50 music sequence | 8 | |
| SVQ | Roland music sequence (generic) | 7 | |
| SVR | GoDot C64 Image Processing - Saver | 8 | |
| SVS | Aperio ScanScope Virtual Slide | 3 | |
| SVT | Solace Virtual Tape format 1 | 4 | |
| SW2 | SoftWrap license data | 10 | |
| SWA | ShockWave Audio | 10 | |
| SWAV | Nintendo DS Sound Wave | 7 | |
| SWC | Flash Component distribution archive | 5 | |
| SWD | Flash file with debug info | 9 | |
| SWD/WLD | Settlers II map | 5 | |
| SWD/STS | Storybook Weaver Deluxe for Windows Story (v2.00) | 76 | |
| SWE | Sweet32 Executable binary | 6 | |
| SWF | Macromedia Flash Player Compressed Movie | 16 | Alex Paven |
| SWF | Macromedia Flash Player Movie | 41 | .Cryorb |
| SWG | Swag Reader Packet | 67 | |
| SWI | HP Switch firmware | 6 | |
| SWI | SWiSH project | 10 | |
| SWIDTAG | SWID Tag | 9 | |
| SWISH | Swish-e index | 38 | |
| SWITCH | Switch secure package | 3 | |
| SWM | SMIRT file | 12 | |
| SWP | Vim swap | 2 | |
| SWS | PowerDesigner WorkSpace | 6 | |
| SWS | ScreenWeaver Project | 7 | Alex Paven |
| SX2 | Propellerhead Reason NN-XT Patch | 6 | |
| SXC | OpenOffice Calc spreadsheet | 20 | |
| SXC | StarOffice Calc spreadsheet | 13 | |
| SXD | StarOffice Drawing | 12 | Ryan Jones |
| SXE | ProfiCAD drawing | 28 | |
| SXE | ProfiCAD drawing (v4) | 5 | |
| SXI | OpenOffice Impress presentation | 14 | |
| SXI | StarOffice Impress presentation | 14 | |
| SXM | StarOffice Math document | 6 | |
| SXW | OpenOffice Writer document | 30 | |
| SXW | StarOffice Writer document | 16 | |
| SYF | Artline Symbol File | 10 | |
| SYM | CADVANCE 2D symbol | 4 | |
| SYM | CODESYS Symbols | 10 | |
| SYM | DeltaCad Symbol | 6 | |
| SYM | Harvard Graphics Symbols (v2.x) | 6 | |
| SYM | Oberon V4 Symbol data | 57 | Romiras |
| SYM | PolyPlot Symbol | 17 | |
| SYM | SuperMap - AvisMap GIS SYMbol library | 9 | Kieran O'Donnell |
| SYM | gEDA Symbol | 111 | |
| SYMCACHE | Windows Symbol Cache | 31 | Stef |
| SYMMOD | Symphonie Module | 13 | |
| SYN | Synthesis module | 37 | |
| SYN/SYNU | Synu bitmap | 2 | |
| SYNMOD | SynTracker module | 16 | |
| SYNW-PROJ | SynWrite Project | 7 | |
| SYNW-SNIPPET | SynWrite Snippet | 172 | |
| SYS | CyberAIDS infected Apple 2 executable | 2 | |
| SYS | FreeDOS KEYBoard layout collection | 10 | Joerg Jenderek |
| SYS | PS2 Icon | 2 | |
| SYS | Punto 13 System | 2 | |
| SZ | Snzip compressed (framing format) | 4 | |
| SZ | Snzip compressed (framing2 format) | 4 | |
| SZIP | szip compressed data | 7 | |
| SZP | Luigi's Mansion game data | 3 | |
| SZT | Super ZZT Game Creation System data format | 11 | |
| SZX | zx-state snapshot | 10 | |
