S

File extensions starting with the letter S...

  .S    Assembler Source Code
  .S$$  Temporary Sort File
  .S01  WordPerfect Distribution File
  .S02  WordPerfect Distribution File
  .S03  WordPerfect Distribution File
  .S2P  Sonnet File
  .S3I  ScreamTracker v3 Instrument
  .S3M  ScreamTracker v3 Module
        ScreamTracker v3 Sound File
  .SAD  Serveron Analyzer Data File
  .SAH  SETI@Home Data File
  .SAM  Ami Pro Text File
        Signed 8-bit Sample Data
  .SAN  The Curse of Monkey Island Movie File
  .SAT  ACIS Solid Model (any ACIS-based CAD program)
  .SAV  Backup
        Saved File (various)
  .SB   Audio File
        Raw Signed Byte (8-bit) Data
  .SBF  Superbase 95 File
  .SBK  Emu SoundFont v1.x Bank Files
        Superbase 95 File
        Creative Labs SB AWE 32
  .SBL  Shockwave Flash Object
  .SBP  Superbase DML Program
        SetupBuilder Professional Projects File
  .SC   Framework Screen Driver
        Paradox Source Code
        Ingres Embedded SQL/C Source File
  .SC2  Sample Cell
        II PC Instrument
        Schedule+ File
        SAS Catalog
  .SC3  Harvard Screen Driver (Harvard Graphics taken over by Serif)
  .SCC  Text File
        Stamp Collector's Girl Friday Catalog File
        Source Safe File
  .SCD  Graphic (SCODL Scan Conversion Object Description Language)
        Schedule+ File
        TurboTax Schedule File
  .SCE  SoftCuisine Data Exchange File
  .SCF  Windows Explorer Command
  .SCH  Schedule+ File
        EAGLE Schematic File
        OrCad Schematics File
  .SCI  ScanVec Inspire File
  .SCL  SCALA Scale
  .SCM  SchematicMaker (Topanga Software) File
        Scheme Program
        ScreenCam Movie
        Starcraft Map File
  .SCN  Compressed Screen format
        TrueSpace2 Scene
  .SCO  High Score (various)
  .SCP  Script (various)
  .SCR  Faxview Fax
        Screen Saver
        Procomm Plus Screen Snapshot File
        Script
        LocoScript Screen Font File
  .SCT  Foxpro Screen
        PC Tools Script Tools
        Scitex Continuous Tone Bitmap
        SAS Catalog
        Windows Script Component
        Lotus Screen Capture Text
  .SCV  ScanVec CASmate File
  .SCX  MS FoxPro Screen File
        Image File
        Starcraft Map File
  .SD   Sound Designer I Audio
  .SD2  Sound Designer II Flattened File
        Sound Designer II Data Fork
        SAS Database
  .SDA  StarOffice Drawing
        SoftCuisine Data Archive
  .SDC  StarOffice Spreadsheet
  .SDD  StarOffice Presentation
  .SDF  Standard Data Format
        Standart-Delay-Format (Chip design gatelevel-delay data exchange...
           e.g., Synopys to Modelsim)
        Schedule Data File
        System File Format
        Autodesk MapGuide Spatial Data Files
  .SDK  Roland S-series Floppy Disk Image
        Autosketch Drawing
  .SDL  SmartDraw Library
  .SDN  Shell Archive
  .SDR  SmartDraw Drawing
  .SDS  StarOffice Chart
        Raw Midi Sample Dump Standard File
  .SDT  SmartDraw Template
  .SDV  Semicolon Divided Values File
  .SDW  StarOffice Text
        Raw Signed DWord (32-bit) Data
        Lotus WordPro Graphic
  .SDX  Midi Sample Dump Standard Files Compacted by SDX
  .SEA  Macintosh Compressed Archive File
  .SEC  Compressed Archive File
        PGP Secret Key Ring
  .SEG  Compressed File Segment
  .SEL  PaintShop Pro Selection File
  .SEP  TIFF Bitmap Separation
  .SEQ  Animation File
        Chromeleon Sequence List
  .SES  Digital Audio Editor File
  .SET  Driver Set
        Image Settings
        Backup File Set
        Configuration (various)
  .SEX  Urban Chaos Game File
  .SF   Sound File
        OS/2 WPS Attribute Storage
        IRCAM SoundFile
  .SF2  Emu SoundFont v2.0 File
        Creative Labs Soundfont 2.0 Bank File
  .SFD  SoundStage Sound File Data
  .SFE  Split Files Shell Extension
  .SFI  Ventura Printer Font
        SoundStage Sound File Info
  .SFL  Ventura Printer Font
        LaserJet Landscape Font
  .SFP  Ventura Printer Font
        LaserJet Portrait Font
  .SFR  Sonic Foundry Sample Resource
  .SFS  StarOffice Frame
        PCL 5 Scalable Font
  .SFT  Chiwriter Screen Font
  .SFV  QuickSFV/WinSFV Checksum File
        Easy SFV Creator
  .SFW  Graphic File (Seattle Film Works)  [Viewer]
  .SFX  Self-extracting Archive
  .SGF  Smart Game Format
  .SGI  Graphic File  [Viewer]
  .SGL  StarOffice Master Document
  .SGT  Hitman Game Sound File
  .SH   Archive File
  .SH3  Harvard Presentation (Harvard Graphics taken over by Serif)
  .SHB  Corel Background File
        Document Shortcut File
  .SHG  Hotspot Editor Hypergraphic
  .SHK  Macintosh Compressed Archive File
  .SHM  WordPerfect Shell Macro
  .SHN  Shorten Audio Compression File [Additional]
  .SHP  3D Studio Shapes File
        3D Modeling File (various)
  .SHR  Archive File
  .SHS  Shell Scrap Object File
  .SHW  Corel Presentation
        WordPerfect Slide Show
        Show File
  .SHX  AutoCAD Shape Entities
  .SI   SoftImage Image File
  .SIB  Sibelius Music File
  .SIG  Signature File
  .SIK  Backup File
  .SIM  Simulation
  .SIT  StuffIt Compressed Archive File (Multiple platforms)
  .SIZ  Oracle 7 Configuration
  .SJF  Split Files Shell Extension
  .SKA  PGP Secret Keyring
  .SKB  QuickPOS (Point-Of-Sale) Standard Keyboard Layout File
  .SKL  Authorware Resource
  .SKN  FileWrangler/SecurDesk!/ImageForge Graphic Skin
        eRocket eBook Skin
  .SKR  Microsoft ScriptIt
  .SL   S-Lang Program File
        PACT's Save Layout
  .SLB  AutoCAD Slide Library
  .SLC  Telix Compiler SALT Script
  .SLD  AutoCAD Slide
  .SLDASM  Solidworks File
  .SLDDRW  Solidworks File
  .SLG  Chromeleon Audit Trail
  .SLK  Data Exchange File (Symbolic Link)
  .SLM  Microsoft Visual FoxPro
  .SLT  Telix SALT Script Application
  .SM   Smalltalk Program File
  .SM   Samna Word Text File
  .SM3  DataCAD Symbol File
  .SMC  Super Nintendo Game-console ROM Image  [See ZNES or SNES9x]
  .SMD  StarOffice Mail
  .SMF  StarOffice Formula
  .SMI  RealPlay SMIL File
  .SMK  Smacker Compressed File
  .SMM  Ami Pro Macro
  .SMP  Sample or Samplevision Format
        Ad Lib Gold Sample
  .SMS  MS Package Definition File (used now in place of .PDF)
  .SMT  HiPer-Six Memo File
  .SND  Sound Clip  [Viewer]
        Raw Unsigned PCM Data
        AKAI MPC-series Sample
        NeXT Sound
        Macintosh Sound Resource
  .SNG  MIDI Song
  .SNM  Netscape Mail
  .SNO  SNOBOL Program File
  .SNP  Shapshot file (Snapview)
        CoffeeCup HTML Editor Snippet
  .SOA  Sage MAS 90 Accounting Software File
  .SOU  SB Studio II Sound
  .SP   Compressed Archive File
  .SPC  Multiplan Program
        WordPerfect Temp File
        SNES Audio file
  .SPD  Harvard Bitstream Typefaces (Harvard Graphics taken over by Serif)
        PostScript Printer
        Mini-driver
        Speech Data File
        Speedo Scalable Font
  .SPF  Site Publisher Profile
  .SPG  Sprint Glossary
  .SPJ  Site Publisher Project File
  .SPL  Compressed Archive File
        Printer Spool File
        Sprint Printer Driver
        Sample File
        Spell Checker
        Digitrakker Sample (by n-FaCToR)
        Shockwave Flash Object
        Split Files Shell Extension
  .SPM  WordPerfect File
  .SPN  WordPerfect Distribution File
  .SPP  Sprint Printer File
        Serif PhotoPlus Native Format File
  .SPR  Sprint Document Letter
        Foxpro Generated Screen Program
  .SPS  Sprint Screen Driver
  .SPT  SPITBOL Program File
  .SPW  SigmaPlot Worksheet
  .SPX  Foxpro Compiler Screen Program
        Screen Peace Extension
  .SQB  SyQuest Backup
  .SQC  Structured Query Language Common Code File  [SQL]
  .SQL  Structured Query Language Data  [SQL]
  .SQR  Structured Query Language Program File  [SQL]
  .SQZ  Compressed Archive File
  .SRC  Sourcecode (various)
  .SRF  Sun Raster Graphic File
  .SSD  SAS Database
  .SSF  Enable Spreadsheet File
  .SSH2  SSH Secure Shell Client
  .SSI  Installer/GD Software Setup Information
  .SSM  RealPlay Standard Streming Metafile
  .SST  Certificate Store
  .ST   SMALLTALK Program File
        Atari ST Disk Image
        NeoPaint Stamp File
  .STA  Eudora File
  .STB  Genus Stub Library
  .STD  State Transition Diagram Graphic
        SureThing CD Labeler Document
        LocoScript Standard Script File
  .STF  Compressed Archive File
        Setup Information
        Structured File
  .STG  PageKeeper Storage File
  .STK  Personal Stock Monitor File
  .STL  Certificate Trust List
        CAD Software Solid Modeling/Prototyping File
  .STM  Sound File
        State Transition Diagram Model
        Scream Tracker v2 Module
        SHTML File
  .STO  Genus Pascal Stub OBJ File
  .STP  PageKeeper Packed Storage File
  .STR  dBase Structure List
        DataPerfect Structure File
        Sceensaver
        Stream File (Playstation Discs)
  .STS  MS C Project Status Info
  .STY  Style Sheet
        MS Interactive Music Control
        LaTeX2e Style
  .SUB  CloneCd Related File
  .SUD  Super Project Analyzer Data
  .SUN  Sun Raster Graphic File
  .SUP  WordPerfect Supplemental Dictionary
        Super Porject Analyzer Project
  .SVD  Word Backup File
  .SVG  Word Backup File
        Scalable Vector Graphics File
  .SVP  WISCO Survey Power
        SwiftView Command File
  .SVS  Word Backup File
  .SVX  Interchange File Format, 8SVX/16SV
        Amiga 8SVX Sound
  .SW   Audio File
        Raw Signed Word (16-bit) Data
  .SWA  Shockwave Audio File
  .SWD  Storybook File (educational)
  .SWF  Macromedia Flash Format  [Alternate]  [Viewer]
  .SWI  Swish Data File
  .SWL  Macromedia Flash Format  [Alternate]
  .SWP  Sprint Backup File
        Swap File
  .SWT  VB Setup Wizard Template File
        Space Watch Pro Data File
  .SY#  Darn! Backup Files
  .SY3  Harvard Symbol File (Harvard Graphics taken over by Serif)
  .SYD  Sysedit Backup File
  .SYL  SYLK Spreadsheet Format
  .SYM  Symbol Table (various)
  .SYN  Synonym File
  .SYS  System Configuration
        System Device Driver
  .SYW  Harvard Symbol Graphic (Harvard Graphics taken over by Serif)
        Yamaha SY-series Wave Files