S
| Ext. | Description | Used by |
|---|---|---|
| S$$ | Temporary sort file | Sprint |
| S | ASSEMBLY source code file | unix |
| S | Multi Edit macro file source | Multi Edit |
| S | MSTS Shape file | MSTS |
| S19 | Motorola ASCII format of executables | |
| S1K | S1000 Simnet Format | |
| S3I | Digiplayer/ST3 Sample File | Digiplayer - ST3 |
| S3M | Music (16 channels) | Scream Tracker 3.0 - DMP |
| S7I | Seed7 library / include file | Seed7 interpreter and compiler |
| SA? | Packed mail | FTN software |
| SAB | Saber file | Star Wars: Jedi Knight Jedi Academy |
| SAF | see SAIF | |
| SAFE | SafeIT Encrypted | |
| SAIF | Spatial Archive Interchange Format | |
| SAL | Datafile | SORITEC |
| SAN | LucasArts' SMUSH/INSANE animation | |
| SAM | Ami Pro data file | Ami Pro |
| SAM | Text file | Samna - Lotus Ami/Ami Pro |
| SAP | Atari SAP music format | |
| SAR | Archive | SAR |
| SAT | ACIS | |
| SATS | Static source | ATS |
| SAV | Backup file (saved file) | |
| SAV | Configuration | |
| SAV | Executable | RT-11 |
| SAV | SPSS "System File" | PSPP |
| SAV | Saved game state | Spider Solitaire (Windows) |
| SAVER | Screensaver | Mac OS X |
| SB | Audio file (signed byte) | |
| SB | Raw Signed Byte (8bit) data | AWAVE |
| SB | Raw Signed PCM Byte 8bit data | AWAVE |
| SB | Scratch project | Scratch |
| SBD | Storyboard | Storyboard Editor |
| SBH | Header | ScriptBasic |
| SBI | Sound Blaster Instrument file (Creative Labs) | |
| SBK | Emu SoundFont Bank (AWE32 Bank) | Convert (c) Villena |
| SBL | Stony Brook Pascal library | SB Pascal |
| SBP | DML program | Superbase 4 |
| SBR | Support file | Source Browser |
| SBT | Notes related to record | Suberbase 4 Windows |
| SC | Display driver | Framework II |
| SC | PAL script | Paradox |
| SC | Script | Borland Paradox |
| SC3 | Renamed dBASE III screen mask file | dBASE IV |
| SC3 | Screen device driver | Harvard Graphics 3.0 |
| SC3 | Saved City | SimCity 3000 |
| SC4 | Saved City | SimCity 4 |
| SC4 | Game Scenario | RollerCoaster Tycoon Deluxe/Expansion Pack |
| SC6 | Game Scenario | RollerCoaster Tycoon 2 |
| SCA | Datafile | SCA |
| SCC | Text file | |
| SCD | SCODOL film recorder (Scan Conversion Object Description Language) | SCODOL |
| SCF | Standard Chromatogram Format | DNA Baser Assembler |
| SCF | Standard Chromatogram Format | Staden package |
| SCF | ? | SimAnt or SimTown ?? |
| SCF | Windows Explorer Command (e.g.: show desktop.scf) | Windows Explorer |
| SCF | Multimedia show | ScoreMaker |
| SCF | Spelling checker configuration file | Symphony |
| SCH | Project schedule | Schedule Publisher |
| SCH | Circuit Design Schematic | P-CAD - Orcad - Protel |
| SchDoc | Circuit Design Schematic | Protel - Altium Designer |
| SCI | Fax | SciFax |
| SCI | System Configuration Information | |
| SCM | Scheme source code file | |
| SCM | Schematic file (Circuit Diagram for PCB design) | Zuken CadStar |
| SCM | StarCraft mission | |
| SCN | SCeNe RTrace | |
| SCN | Screen file | Kermit |
| SCO | High score | |
| SCP | Script | BITCOM |
| SCR | Any other screen system | |
| SCR | DEBUG source code file | DOS Debug |
| SCR | Forth screen (source) file | Forth |
| SCR | Screen - screen snapshot | dBASE IV - Procomm Plus |
| SCR | Screen font | LocoScript |
| SCR | Screen saver | Windows 3.x |
| SCR | Screen snapshop | |
| SCR | Script file source | TeleMate - Kermit - 1st Reader |
| SCT | Additional (FPT) screen description file | FoxPro |
| SCTOR | Raster graphics format used by some very obscure custom operating systems | |
| SCX | Chart | Stanford Chart |
| SCX | Graphics format | ColoRIX |
| SCX | Main (DBF) screen description file | FoxPro |
| SCX | StarCraft: Brood War scenario | StarCraft: Brood War |
| SCY | Security file | ReaGeniX |
| SD | Sound Designer I audio file | AWAVE |
| SD7 | Seed7 source file | Seed7 interpreter and compiler |
| SDA | Fidonet's Software Distribution Network file archive description | |
| SDC | Video | DigimaxMaster - Samsung NV3 |
| SDC | Synopsys Design Constraints | Electronic Design Automation Tools |
| SDF | Microsoft SQL Server Compact Edition database file | |
| SDF | Flight data | microdrones GmbH |
| SDF | Source definition file | Sourcer |
| SDF | System Data Format file (fixed length ASCII text) | |
| SDI | Software Distribution Network Info file | |
| SDK | Roland S-550/S-50/W-30 Disk Image | |
| SDL | Alias Wavefront Scene Description Language | |
| SDM | Signed Differential Mapping brain maps and/or distributions | Signed Differential Mapping |
| SDML | Spacial Data Modeling Language | |
| SDN | Software Distribution Network compressd file archive | pak251.exe |
| SDR | SmartDraw File | SmartDraw Pro |
| SDS | MIDI Sample DUMP Standard File | |
| SDS | Self Defining Structure provides for N-dimensional very large datasets using HHCode | geographic information systems and relational database management systems |
| SDTS | Spatial Data Transfer Standard | |
| SDW | Ami Draw Symbol File | |
| SDX | Sample DUMP Exchange File | |
| SEA | Self-Extracting compressed Macintosh file Archive | |
| SEC | compressed file | |
| SEC | Diskreet encrypted file | Diskreet |
| SEC | Secret key ring file | Pretty Good Privacy RSA System |
| SEC | Secured animation file | Disney Animation Studio |
| SED | Self extraction directive file | IExpress |
| SEN | Scifer Archive Format (Internal Header Mode) | |
| SEP | Printer separator page | |
| SEQ | ABI Text Sequence | Applied Biosystems |
| SEQ | Atari animation file | |
| SEQ | Video | Tiertex video sequence |
| SEQ | Sequential Instruction File | Bubble Chamber |
| SES | Session info | Clarion Modula-2 |
| SES | Multitrack Audio Session info | Adobe Audition |
| SET | Configuration file | 1st Reader |
| SET | Driver sets created by Install | Symphony |
| SET | Extension used by Norton Backup and CPS Backup for setup info | Norton Backup - CPS Backup |
| SET | Hump Assignments File | FYM |
| SET | Setup options file | |
| SET | YVD card set file | YVD |
| SF | IRCAM Sound File | CSound package - MixView sound sample editor |
| SF | JAR Digital Signature | |
| SF | WPS attribute storage (OS/2 WorkPlace Shell) wp_root.sf | OS/2 WorkPlace Shell |
| SF2 | Emu SoundFont Bank v2.0 file | AWAVE |
| /div> | Configuration file | emacs |
| SFB | HP Soft font (obsolete under Windows) | |
| SFD | SoundStage Data file | AWAVE |
| SFF | Standard Flowgram Format | DNA Baser SFF Workbench tool |
| SFF | Scene File Format | |
| SFI | Graphics | SIS Framegrabber |
| SFI | Printer font (HP LaserJet landscape) | Ventura Publisher |
| SFL | PCL 4 bitmap font (landscape) | landscape - Intellifont - Ventura Publisher |
| SFL | Sound file | Sound Forge and ACID Pro |
| SFN | Font | SPX |
| SFO | Bitstream font file - fontware format | |
| SFP | PCL 4 bitmap font | portrait - Intellifont - Ventura Publisher |
| SFR | Sonic Foundry Sample Resource | AWAVE |
| SFS | PCL 5 scalable font file | Intellifont |
| SFT | Screen font | ChiWriter |
| S/div> | Renamed dBASE III screen mask file | dBASE IV |
| FX | SFX (self-extracting archives) script | RAR |
| SG1 | Graphics | Stanford Graphics |
| SGF | Document with graphics | Starwriter |
| SGI | Graphics file | IRIS - Silicon Graphics |
| SGP | Statistics | STATGRAPHICS Plus |
| SGT | Save/get keyboard macro | Signature |
| SH | ASCII archive | SHAR |
| SH | Unix shell script | |
| SH3 | Presentation | Harvard Graphics 3.0 |
| SHAR | Archive | UNSHAR (Unix) |
| SHB | Background | CorelShow |
| SHG | Segmented Hyper Graphics | Microsoft's shed.exe, JGsoft's Hotspot Builder, EC Software's Help and Manual |
| SHK | Apple II archive | SHRINKIT |
| SHM | Shell macro | WordPerfect Library |
| SHP | Shape file and sdiv id="PYI"> PYIource file for text fonts
ESRI shapefile |
AutoCAD
ArcGIS |
| SHR | see SHAR | |
| SHT | HTML format for WWW | NetScape |
| SHW | Presentation | Harvard Graphics 2.0 - CorelShow |
| SHW | Slide show | WordPerfect Presentations |
| SHX | Shape entities
ESRI shapefile |
AutoCAD
ArcGIS |
| SIB | Sibelius file | Sibelius 1-5 |
| SID | Sound Interface Device file format | SIDplayer, SIDplay, sidplay2 /w |
| SIF | Setup Installation Files info | Windows NT Setup |
| SIG | Current program settings | Signature |
| SIG | Signature file | ThunderByte AntiVirus - PopMail |
| SIK | Backup file (Sicherungskopie) | Microsoft Word |
| SIM | Simon document file - Simon instruction software editor | |
| SIS | symbian file | |
| SIT | Archive (Macintosh) | STUFFIT |
| SKP | Google SketchUp file | |
| SKY | SYLK Spreadsheet file (used by Multiplan) | |
| SL | S-Lang source code file | |
| SLB | P-CAD library (symbols) | P-CAD |
| SLB | Slide library | AutoCAD |
| SLC | SALT (script from Telix) compiled code | Telix |
| SLD | Slide | AutoCAD |
| SLDPRT | Part | SolidWorks |
| SLDASM | Assembly | SolidWorks |
| SLDDRW | Drawing | SolidWorks |
| SLI | Slide | MAGICorp Slide Service |
| SLK | Microsoft Excel import format | Microsoft Excel |
| SLK | SYLK Symbolic Link format data file | MultiPlan |
| SLL | Sound data file | |
| SLL | Static Link Library | PowerBASIC |
| SLN | Microsoft Visual Studio Solution | Microsoft Visual Studio |
| SLP | SLP command file created by SRCCOM | RT-11 |
| SLP | Localization project file | Sisulizer |
| SLT | SALT Script Application Language for Telix script source | Telix |
| SLV | Solution for any game | many |
| SM | Maillist | SoftSpoken Mailer |
| SM | Script | ScriptMaker |
| SM | SMALLTALK source code file | |
| SM | Text file | Samna Word |
| SM | StepMania Step File | StepMania |
| SMC | Super MagiCom SNES ROM image | Super MagiCom |
| SMCLVL | Secret Maryo Chronicles Level | Secret Maryo Chronicles |
| SMF | Fax | SMARTFAX |
| SMF | 3D World Studio mesh files | |
| SMK | Smacker Video Format (RAD Video) | |
| SML | System Macro Library | RT-11 |
| SMM | Ami Pro Macro File | Ami Pro |
| SMN | Font (ParaGraph's WorkScript format) | |
| SMP | Sample (sound file) | |
| SMP | Samplevision File | Samplevision |
| SMPL | Data | Megahedron 3D object |
| SMS | MSTS Sound management system file | MSTS |
| SMT | Text file | Smart Ware II |
| SN | Compressed song file | Sound Club editor |
| SND | Digitized sound file | Macintosh/ATARI/PC |
| SND | Power Chords drum sound file | Power Chord |
| SNDB | SQLNotes database | SQLNotes |
| SNG | Song (midi sound) | Midisoft Studio - Prism |
| SNG | Saved game file for StarCraft | StarCraft |
| SNO | SNOBOL4 source code file | |
| SNP | Book-shelf for .BOO | READIBM |
| SNP | Microsoft Access report snapshot | |
| SNP | Output video format from Computer Eyes equipment | |
| SNX | Saved game file for StarCraft: Brood War | StarCraft: Brood War |
| SO | shared object, dynamically linked library | Unix |
| SOAR | Soar Production file | |
| SOF | Altera FPGA programming file (internal RAM) | Altera Quartus |
| SOL | Solution e.g. game walkthroughs | |
| SOL | Adobe Flash shared object ("Flash cookie") (Movie, film, video and multimedia file type) | Adobe Flash |
| SOM | Network serial numbers | Quattro Pro |
| SOM | Sort information | Paradox |
| SON | Song | SBStudio II |
| SOU | Temporary BATCH file | RT-11 |
| SOU | SBStudio II Sound File | SBStudio II |
| SOU | Sound data (sound tool) | |
| SP | Archive (unix) | SPLINT |
| SPC | Program | Microsoft Multiplan |
| SPC | Temporary file | WordPerfect for Win |
| SPC | SNES SPC-700 Sound File | SNES games |
| SPC | Spectroscopic data (scientific) | Thermo Scientific |
| SPD | Scalable font | Speedo - Harvard Graphics 3.0 |
| SPF | Slide presentation file | EnerGraphics |
| SPF | data | SQR Portable Format |
| SPG | Glossary | Sprint |
| SPI | Graphics (Siemens and Philips scanner) | |
| SPIFF | Still Picture Interchange File Format | |
| SPIN | Spin source file | Parallax Propeller Microcontrollers |
| SPL | Archive | SPLINT |
| SPL | Customized printer driver | Sprint |
| SPL | Divided file segment | Slice |
| SPL | Personal spell dictionary | Signature |
| SPL | Print spooling file | Windows 3.x |
| SPL | Sample | |
| SPM | Data wp{wp}.spm | WordPerfect |
| SPP | Printer file | Sprint |
| SPR | Document letter | Sprint |
| SPR | Generated executable screen file | FoxPro |
| SPR | Sprite | |
| SPR | Story Board sprites | |
| SPS | Exported SyncBack profile | SyncBack |
| SPS | Screen driver | Sprint |
| SPS | SPSSx source code file | VAX/VMS |
| SPT | Data support file (MITAC disk/system management utility pack) | MITAC disk/system management utility pack |
| SPT | SPITBOL source code file | |
| SPW | Worksheet | SigmaPlot |
| SPX | Compiled executable screen file | FoxPro |
| SPX | Ogg Speex bitstream | Xiph.Org Foundation |
| SQD | Squish message base | Squish |
| SQI | Squish message base index | Squish |
| SQL | SQL language code | Any SQL database |
| SQL | Squish message base lastread pointers | Squish |
| SQM | Windows Live Messenger log file | |
| SQN | Note file | SquareNote |
| SQZ | Archive | SQUEEZE |
| SQZ | FOXPRO Squeeze file | FOXPRO |
| SRC | Source code | Aurora Compiler |
| SRC | Multi-edit source | Multi-Edit |
| SRC | Source | DataFlex |
| SRF | Sun Raster File graphics file | |
| SRP | Script | QuickLink |
| SRT | Subtitle format | SubRip |
| SS | Bitmap graphics | Splash |
| SS | Screen saver | DN |
| SSC | Celestia Solar System Catalog file | Celestia |
| SSD | Datafile | SAS/PC |
| SSF | Graphic file | SnagIt Studio File/PC |
| SSG | Saved game | Simsig |
| SSIF | Stereoscopic Interleaved file | Media playback devices / software that supports Blu-ray 3D |
| SSP | Datafile | SAS Transport |
| SSR | FLEXIT Singleshot Survey Raw Data file | FLEXIT |
| SST | AVHRR graphic file | |
| SSV | Spreadsheet viewer file | |
| ST | Instrument library | Scream Tracker |
| ST | SMALLTALK source code file | Little Smalltalk |
| ST | Stamp | NeoPaint |
| STA | Data file | Statistica |
| STA | Saved state | Reflection 4.0 |
| STA | Stack | Spinmaker Plus |
| STB | Symbol table file | RT-11 |
| STB | Stub library | Genus GX Kernel |
| STC | Celestia Star Catalog file | Celestia |
| STC | OpenOffice.org XML spreadsheet template | OpenOffice.org Calc |
| STD | State Transition Diagram graphic file | Prosa |
| STD | OpenOffice.org XML drawing template | OpenOffice.org Draw |
| STEAMSTART | STEAMSTART file | Steam (software) |
| STF | Archive | SHRINKTOFIT |
| STF | Setup Table File | |
| STI | OpenOffice.org XML presentation template | OpenOffice.org Impress |
| STK | eBook | Starebook |
| STL | Stereolithography Interface Format | |
| STL | Subtitle files EBU-standard | |
| STM | Music format (4 channels) (Scream Tracker Module) | ST - DMP |
| STM | State Transition Diagram model file | Prosa |
| STO | Pascal stub OBJ file | Genus GX Kernel |
| STP | Subtitler Project | Belle Nuit Subtitler |
| STR | Gate3 table structure file | |
| STR | Structure list object file | dBASE Application Generator |
| STR | PlayStation video file | |
| STS | Music format (Scream Tracker Song) | ST 2.0-2.3 |
| STS | Project status info | Microsoft C/C++ |
| STU | Studio Project | Pinnacle Studio (video editing software) |
| STUFF | EVE Online compressed file archive | CCP hf |
| STW | Data file | SmartTerm for Windows |
| STW | OpenOffice.org XML text document template | OpenOffice.org Writer |
| STX | Electronic book | SmarText |
| STX | Music format | |
| STX | Tax form | CA-Simply Tax |
| STY | Ami Pro Template (Style); used by other programs for `styles` | Ami Pro |
| STY | Style library or sheet | many |
| SU? | Packed mail | FTN software |
| SUB | Subtitle format | SubViewer; Author David Dolinski |
| SUF | Sony camera configuration file (setup.suf) | XDCAM-EX camcorders |
| SUI | SUIT library | Simple User Interface Toolkit |
| SUM | Summary | |
| SUN | Sun rasterfile graphics file | Sun Microsystems |
| SUO | Solution User Options | Microsoft Visual Studio |
| SUP | Subtitle file (Blu-ray encapsulated container) | SupRip |
| SUP | Supplementary dictionary | WordPerfect for Win |
| SV6 | Saved Game File | RollerCoaster Tycoon 2 |
| SVC | Represents the ServiceHost instance hosted by Internet Information Services | Windows Communication Foundation |
| SVD | Autosave file for document | Microsoft Word |
| SVG | Autosave file for glossary | Microsoft Word |
| SVG | Scalable Vector Graphics | many |
| SVQ | MRC-Pro sequencers music format | Roland Corporation synths such as XP or Fantom series |
| SVS | Autosave file for style sheet | Microsoft Word |
| SVW | Super Video Windows | Conversion Artist |
| SVX | Interchange, 8SVX/16SV | AWAVE |
| SVY | FLEXIT Survey data | FLEXIT |
| SW | Raw Signed Word (16bit) data | AWAVE |
| SWF | Shockwave Flash | Macromedia |
| SWG | SWAG Pascal Snippets file | SWAG |
| SWP | Document backup | Sprint |
| SWP | Swap file | |
| SWT | Hump Routes File | FYM |
| SXC | OpenOffice.org XML spreadsheet | OpenOffice.org Calc |
| SXD | OpenOffice.org XML drawing | OpenOffice.org Draw |
| SXG | OpenOffice.org XML master document | |
| SXI | OpenOffice.org XML presentation | OpenOffice.org Impress |
| SXM | OpenOffice.org XML formula | OpenOffice.org Calc |
| SXP | 3DS Process file | 3D Studio |
| SXW | OpenOffice.org XML text document | OpenOffice.org Writer |
| SY1 | SmartPix symbol library | Ami Pro |
| SY3 | Harvard Graphics format | |
| SY3 | Symbol file | Harvard Graphics 3.0 |
| SYD | Backup of startup files created by QEMM (?) autoexec.syd | |
| SYD | Sysedit backup file | Sysedit |
| SYG | Monitor and handler files created by SYSGEN | RT-11 |
| SYM | Compiler symbolic information file | |
| SYM | P-CAD component (symbols) | P-CAD |
| SYM | Precompiled headers | Borland C++ |
| SYM | Program symbol table | Power C, Microsoft ILink incremental linker |
| SYM | Symbol file | Harvard Graphics 2.0, Microsoft Windows SDK |
| SYN | SDSC Synu image file | SDSC Image Tool |
| SYN | Synonym file | Microsoft Word 5 |
| SYS | Datafile | SYGRAPH - SYSTAT - SPSS/PC |
| SYS | System file - device driver or hardware configuration info | DOS |
| SYW | Graphics file (symbol) | Harvard Graphics Win |
| SYW | Yamaha SY-85/SY-99 Wave File | Convert (c) Villena |
| SZPROJ | SZInstallSystem Project | SoftwareZator 2011 Standart Edition |
Read more about this topic: HKM