Стандартные занчения расширений файлов
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Num Sym
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.S Assembler Source Code
Scheme Source Code
Microsoft Train Simulator Shape File
.S$$ Temporary Sort File
.S$N Mindstore Digital Wallet File (M$A$W$.S$N)
.S?? RAR Compressed File (?? can be 01 to 99 after .R99)
.S01 WordPerfect Distribution File
.S02 WordPerfect Distribution File
.S03 WordPerfect Distribution File
.S16 Sigames File
.S17 SubSeven Saved Settings File
.S19 Motorola Assembly-Language Program ASCII-HEX Data File
.S1A Yamaha EX-series Synthesizer All Internal Memory Data
.S1M Yamaha EX-series Synthesizer Wave and Sample Data
.S1V Yamaha EX-series Synthesizer 256 Voice Data
.S1Y Yamaha EX-series Synthesizer Internal Voice and Performance Data
.S28 Genesis or Sega32X Rom Image
.S2P Sonnet File
.S2S Spike2 Script (Waveform and time stamp data capture and analaysis.)
.S31 SmartWhois (network information utility)
.S3D EverQuest File
Strata 3D (3D modeling/animation)
.S3I ScreamTracker v3 Instrument [use Winamp]
.S3M ScreamTracker v3 Sound File [use Winamp]
.S3Z Amiga and PC Tracker Module [Use ModPlug or DeliPlayer]
.S4T Patent Application Specification Authoring Tool (PASAT) File
.S4W Patent Application Specification Authoring Tool (PASAT) File
.S3Z ScreamTracker v3 File [use Winamp]
.S7P SubSeven Trojan File
.S8 Simul8 Simulation
.SA1 Panasonic e-wear MP3 Player File
.SA2 WinAmp File
.SA4 STABCAL (stability calculation for aqueous systems) File
.SA8 Street Atlas File
.SAB ModelMaker File (3D scanner)
ACIS Solid Binary File (any ACIS-based CAD program)
.SAC Adobe Shared Asset Catalog
.SAD Serveron Analyzer Data File
Electronic Arts Black & White Game Sound File [Dragon UnPACKer]
Fast Atomic Density Evaluator File (FADE computes protein shapes) (PDF link)
.SAF MusicMatch Jukebox Secure Audio File
Twelve Ghosts File (hard disk cleaning utility)
.SAH SETI@Home Data File
.SAK Software Administration Kit (Customer Tracking for Shareware Authors)
.SAL Soritec Data
.SAM Ami Pro Text File
Map File (HOSTS.SAM - Maps IP addresses to machine names)
Signed 8-bit Sample Data
CalTech PaleoMag Data File
.SAN The Curse of Monkey Island Movie File
Legacy of Kain Series Game File
.SAR Phoenix Server Applications Standard Distribution Format
(.JAR file in special directory)
Sons Of The American Revolution Family Tree Creator Data
Saracen Paint [XnView]
Peachtree Software Timeslips Archive
.SAS SAS System File (statistical anaysis)
.SAT ACIS Solid Model (any ACIS-based CAD program)
.SAV Backup
Saved File (various)
Saved Configuration Info (various)
.SAW Living Scenes Jigsaw Puzzles (Saved Puzzle)
.SB Audio File
Raw Signed Byte (8-bit) Data
.SBC Sagebrush Corporation Spectrum CIRC/CAT Report
(this is a suggested extension in their manual;
it could be any extension)
.SBD Storyboard Editor Storyboard
.SBF Superbase 95 File
.SBI Sound Blaster Instrument File
Selfboot Inducer (Unpacks files for use with Dreamcast Homebrew)
.SBK Emu SoundFont v1.x Bank Files
Superbase 95 File
Creative Labs SB AWE 32
Statfoot32 Soccer League Tracking File
SWiSH Backup File (Flash animation)
.SBL Shockwave Flash Object
Softbridge Basic Language
SiBaLa Script File (Simple Batch Language)
.SBM Hello Network HelloCombined Media Player (MultiPlatform Streaming Media Player)
.SBN ArcView Spatial Index For Read-Write Shapefiles (GIS-related)
.SBP Superbase DML Program
Scratchboard
SetupBuilder Professional Projects File
.SBR Source Browser Support File
.SBS SWAT HRU Output File (river basin scale model)
.SBT Superbase Record Notes
.SBW Savings Bonds Wizard (U.S. Treasury program)
.SBX ArcView Spatial Index For Read-Write Shapefiles (GIS-related)
.SC Framework Screen Driver
Paradox Source Code
Ingres Embedded SQL/C Source File
.SC? ColoRIX Image (? can vary) [XnView]
.SC2 Sample Cell
SimCity 2000 City
II PC Instrument
Schedule+ File
SAS Catalog
MSX 2 Screen [XnView]
.SC3 Harvard Screen Driver (Harvard Graphics taken over by Serif)
SimCity 3000 File
dBase Screen Mask File
.SC4 RollerCoaster Tycoon Scenario
Creative NOMAD MP3 Manager
.SC6 RollerCoaster Tycoon Scenario
.SCA SCA Datafile
Scala InfoChannel Script
Norton Anti-Virus File
.SCANNER Scanner Output File (usually a bitmap image) - Note:
I've had reports of this but cannot confirm
.SCB Scala InfoChannel Published Script
System Cleaner
.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
Scribus Document (DTP layout)
Microsoft Schedule Data
.SCE SoftCuisine Data Exchange File
.SCF Windows Explorer Command
Symphony Spell Checker Configuration
Photo Soap2 File
ScoreMaker Multimedia Show
SimTown File (Info about Windows Explorer Command Interaction)
.SCG Septerra Core Saved Game
.SCH Schedule+ File
EAGLE Schematic File
OrCad Schematics File
P-CAD Schematic File
Xlinix Foundation Schematic
XML Schema
.SCI ScanVec Inspire File
ColoRIX Image [XnView]
SciFax FAX [XnView]
System Configuration Data
.SCL SCALA Scale
.SCM SchematicMaker (Topanga Software) File
ICQ Sound Compressed Sound Scheme
Scheme Program
Grand Theft Auto 3 Mission Script [GTA3 Mods Editor]
ScreenCam Movie
Starcraft Map File
.SCN Compressed Screen format
TrueSpace2 Scene
Pinnacle Studio Scene File (Info about scenes found in same-named .AVI)
Scenario File For Many Games Including: Age of Empires, Age of Empires:
Rise of Rome, Seven Kingdoms, SimCity Classic, SimCity 2000,
SimCity 3000, SimCity 3000 Unlimited
.SCO High Score (various)
ObjectJ AuthorJ Saved Lesson
Scшшp Script (IRC Client/script)
.SCP Script (various)
.SCR Faxview Fax
Screen Saver
Procomm Plus Screen Snapshot File
Script (various)
DOS DEBUG Input File (can be any extension but often .SCR)
LocoScript Screen Font File
Statistica Scrollsheet
Movie Master Screenplay (DOS software replaced by Hollywood Screenplay)
Sun Raster Graphic [XnView]
Mastercam Dialog Script File (CAD/CAM) (usually in .\MILL6 folder)
.SCRIPT Desktop DNA Application Script
VBScript File
.SCS StuffIt Saved Criteria
OzWin CompuServe E-mail/Forum Access SYSOP File
Samsung Q105 Phone Screen Saver
Omron CX-Supervisor (Factory Automation)
.SCS_TOR Insight II Torsion File
.SCT Foxpro Screen
PC Tools Script Tools
Scitex Continuous Tone Bitmap [XnView]
SAS Catalog
OzWin CompuServe E-mail/Forum Access Forum Section Names
Windows Script Component
Lotus Screen Capture Text
.SCV ScanVec CASmate File
.SCW Score Writer Document (music score)
.SCX Microsoft FoxPro Screen File
ColorIRX Image File [XnView]
Stanford Chart
Starcraft Map File
.SCY ReaGeniX Security File
.SD Sound Designer I Audio
Insight II Structure Data File
Simple Diary
.SD0 Dali Raw File [XnView]
.SD1 Dali Raw File [XnView]
.SD2 Sound Designer II Flattened File
Sound Designer II Data Fork
SAS Database
Dali Raw File [XnView]
.SD7 Daktronics Venus 7000 Electronic Sign Schedule
.SD! OzWin CompuServe E-mail/Forum Access Custom Messsage Search Online
.SDA StarOffice Drawing
OpenOffice.org Drawing
Fidonet Software Distribution Network Archive Description
SoftCuisine Data Archive
PGP Encrypted Executable
.SDB Simply Accounting File
Group Mail Subscriber Plug-in File
Microsoft Win2000 Security Configuration and Analysis Database
STRIP SDB Utility File
GPS Summer Camp Scheduler Database
(Staff and Camper scheduling for summer camps)
.SDC StarOffice Spreadsheet
OpenOffice.org Spreadsheet
.SDD StarOffice Presentation
OpenOffice.org Presentation
.SDE Steganos Disk Encryption File
.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
.SDG Star Office Gallery [XnView]
.SDI Fidonet Software Distribution Network Info
Borland Single Document Interface
.SDK Roland S-series Floppy Disk Image
Autosketch Drawing
.SDL SmartDraw Library
OzWin CompuServe E-mail/Forum Access Custom Messsage Search
.SDN Shell Archive
Fidonet Software Distribution Network Compressed Archive
.SDO DB/TextWorks Database Deferred Update Directory (into .DBR file)
.SDOC Sealed Word File [Unsealer]
.SDP QuickTime Session Description Protocol File (resides on server;
contains info about format, timing, & authorship of streamed media)
Real Player File
StarOffice Picture File
.SDR SmartDraw Drawing
.SDS StarOffice Chart
OpenOffice.org Chart
Raw Midi Sample Dump Standard File
.SDT SmartDraw Template
Dungeon Keeper 2 Archive [Dragon UnPACKer]
Theme Park World Archive [Dragon UnPACKer]
Grand Theft Auto 3 Audio Structure Data [SFX.SDT] (Data in SFX.RAW)
.SDU Edwards Systems Technology File
(EST Signature Device fire alarm panel management)
.SDV Semicolon Divided Values File
Pinnacle Studio Video Editor Project File
.SDW StarOffice Text
OpenOffice.org Text Document
Raw Signed DWord (32-bit) Data
Lotus WordPro Graphic
.SDX Midi Sample Dump Standard Files Compacted by SDX
.SDV Pinnacle Studio DV Video Editing Project
.SE ScopeEdit Project File
.SE1 Microsoft Flight Simulator Scenery File
.SEA Macintosh Compressed Archive File [StuffIt]
.SEB Franklin eBookMan Format
.SEC Compressed Archive File
Disney Animation Studio Secured Animation File
PGP Secret Key Ring
MP3 Music File (unverified)
PTC Pro/ENGINEER Wildfire Sketch
.SED Sedertree (Sedereika) Matrix Wheeling Systems System Profile/Parameter Settings
(Scientific lottery number generator and positioning system in one.)
.SEE LISCAD Plus File
.SEF Steganos Encrypted File
.SEG Compressed File Segment
.SEL PaintShop Pro Selection File
.SEM ZX Spectrum-Emulator Snapshot
.SEO ScopeEdit Object File
.SEP TIFF Bitmap Separation
The Sims Character and Neighborhood File [SimEnhancer 3D Editor]
.SEQ Atari Animation File
TestStand Sequence File
Bubble Chamber Sequential Instruction File
Chromeleon Sequence List
LifeForm File
Stad File [XnView]
Power Tracks Pro Music Sequencer File
Insight II Amino Acid Sequence File
.SEQU Acrobat Sequence File
.SES Digital Audio Editor File
Clarion Modula-2 Session Data
Hummingbird Exceed X-Session
Shadow Security Scanner Session
.SET Driver Set
Image Settings
Backup File Set
Corel Painter Settings File
Configuration (various)
AutoCAD(LT) Set File
Diablo II Character Set Shadowmaster Diablo II LOD Character Editor
Mastercam Setup Sheet Templates (CAD/CAM) (usually in .\MILL6 folder)
.SEU Serials 2000 Encrypted S2K Update
.SEW Janome (New Home) Sewing Machine File (Pfaff Creative VIP Software)
Home Embroidery Format (Catalog using Designer's Gallery Studio)
.SEX Urban Chaos Game File
.SF Sound File [Linux Player]
OS/2 WPS Attribute Storage
IRCAM SoundFile
Powerhouse Subfile Data File (contents defined by .SFD dictionary)
.SF2 Emu SoundFont v2.0 File
Creative Labs Soundfont 2.0 Bank File
.SFA Sonic Foundry Video Editor Audio File
.SFB STRIP SDB Utility Backup File
.SFC Snes9x (freeware Super Nintendo Entertainment System (SNES) emulator)
.SFD SoundStage Sound File Data
Powerhouse Subfile Dictionary (describes .SF file contents)
.SFE Split Files Shell Extension
.SFF Fritz Fax-Print File
Stage Scene File
Structured Fax Format [XnView]
RVS-COM Fax File
.SFI Ventura Printer Font
SoundStage Sound File Info
SIS Framegrabber Graphics
.SFK Sound Forge Peak Data File
.SFL Ventura Printer Font
LaserJet Landscape Font
.SFM DART Pro 98 Soundtree Structure
.SFN SPX Font
.SFO CuteFTP Search File (CUTESEARCH.SFO)
.SFP Ventura Printer Font
LaserJet Portrait Font
.SFR Sonic Foundry Sample Resource
.SFS StarOffice Frame
OpenOffice.org Frame
PCL 5 Scalable Font
Synapse Orion Audio File [Download Support] [Discussion Group]
.SFT Chiwriter Screen Font
.SFV QuickSFV/WinSFV Checksum File
Easy SFV Creator
fsum (free command line checksum file creator/verifier)
.SFW Seattle Film Works File (Actually MGI PhotoSuite File)
[Filmworks Viewer] [XnView] [IrfanView]
.SFX Self-extracting Archive
.SG ABC Snap Graphics User File
.SG1 Stanford Graphics
.SGA SEG-A Seismic Data Format (SEG=Society of Exploration Geophysicists)
[data processing: Lacey]
.SGB SEG-B Seismic Data Format (SEG=Society of Exploration Geophysicists)
[data processing: Lacey]
.SGC SEG-C Seismic Data Format (SEG=Society of Exploration Geophysicists)
[data processing: Lacey]
.SGD SameGame Data File
SEG-D Seismic Data Format (SEG=Society of Exploration Geophysicists)
[data processing: Lacey]
.SGF Smart Game Format
StarWriter Document
Sonique Document with Graphics
.SGI Silicon Graphics IRIS Graphic File [XnView] [IrfanView]
.SGIF Sealed GIF File [Unsealer]
.SGL StarOffice Master Document
OpenOffice.org Master Document
.SGM SoftQuad XMetaL File
.SGN Sierra Print Artist Sign
.SGO SansGUI Object Library File
(compiled class definitions and objects for building models)
.SGP Statgraphics Plus Statistics
SansGUI Project Model File
(model configurations and input parameters defined by simulation users
for simulation runs)
Acoustica MP3 Audio Mixer File
Zapper Software ShareGuard (Software Copy Protection)
.SGS SansGUI Schema Definition File (class schemas defined for a simulator)
.SGT Hitman Game Sound File
DirectMusic Producer
Signature Keyboard Macro
.SGU GJDV Word Processor Keyboard Definition File
Band-in-a-Box File
.SGW Settler GOLD for Windows Data File
.SGY SEG-Y Seismic Data Format (SEG=Society of Exploration Geophysicists)
[data processing: Lacey]
.SH UNIX shar Archive File
UNIX/LINUX Shell Script
.SH3 Harvard Presentation (Harvard Graphics taken over by Serif)
.SHA CorelDRAW Shader (Object properties that make objects look real.)
.SHADER Script File for Game Textures
(ASCII file--but, it's easier if you use Photoshop)
.SHB Corel Background File
Document Shortcut File
.SHD Print Spooler Shadow File
ArcView ARC/INFO Shadeset Symbol File
.SHE Medusa CAD File [Outdated. Medusa CAD sold by PTC to CAD Schroer.]
.SHG Hotspot Editor Hypergraphic
.SHIFTS ARIA PIPP Chemical Shifts File
.SHK Apple II Compressed Archive File
.SHM WordPerfect Shell Macro
.SHN Shorten Audio Compression File [Additional]
.SHP 3D Studio Shapes File
GIS Software Geographic Shape File [GIS info]
(ArcView, et.al.) (JShape/FShape)
3D Modeling File (various)
Command & Conquer File [Format]
.SHR UNIX shar Archive File
.SHS Shell Scrap Object File
.SHTM HTML File Containing Server Side Directives
.SHTML HTML File Containing Server Side Directives
.SHW Corel Presentation
WordPerfect Slide Show
Expression Off-line 3.1 Show File (off light-board show editing)
Show File
.SHX AutoCAD Shape Entities
GIS Software Geographic Shape Index File [GIS info]
(ArcView, et.al.) (JShape/FShape)
.SI SoftImage Image File [XnView]
.SI3 Siemens Mobile Phone Sound File (An MP3 file in a special Siemens format.)
.SIB Sibelius Music File
.SID Commodore64 Music File [Player] MIME type: audio/prs.sid
LizardTech MrSID Photo [Free plug-in viewer]
.SIF Windows NT Setup File
Autodesk Spatial Index File
.SIG Signature File
Print Shop Sign File
PGP or GnuPP Signs File [GnuPP (German site)]
.SIK Backup File
.SIM Simulation (various) (e.g. Setup for Nascar4)
Aurora [XnView]
PowerDVD File (powerdvd.sim)
PC Finder 2002C (Trace stolen computers)
.SIR SIR (Scientific Information Retrieval) Database (ver 1-3)
BYU SIR [XnView]
Solitaire Image Recorder [XnView]
.SIS SymbianOS Installer File (application installation archive)
Nokia Phone Game File
Student Information System Data File
.SIT StuffIt Compressed Archive File (Multiple platforms)
Sinclair Snapshot
.SITHQX StuffIt Compressed Archive File (Multiple platforms)
.SIV ShopCalc Pro File (Cabinet Door & Drawer Cutting List Calculator Invoice)
.SIX SIXEL Graphic
.SIXEL SIXEL Graphic
.SIZ Oracle 7 Configuration
.SJ1 Sega SJ-1 DIGIO [XnView]
.SJF Split Files Shell Extension
.SJPG Sealed JPEG File [Unsealer]
.SJS SimCity Bulidings Add-on (Sim City 3000 Unlimited)
.SJX Seljax Estimating and 3D Design
.SKA PGP Secret Keyring
.SKB QuickPOS (Point-Of-Sale) Standard Keyboard Layout File
.SKC Isis Draw Sketch File (chemical drawings)
.SKCARD Sidekick File (now a discoutinued product of Starfish which maintains a FAQ)
.SKD WinOrbit File
AutoSketch File
VEX Format File
Max Payne Model File
.SKF Autosketch
Sage Accounting Software Data
.SKI Sage Accounting Software Instruction File
.SKL Authorware Resource
.SKN FileWrangler/SecurDesk!/ImageForge Graphic Skin
eRocket eBook Skin
The Sims (Maxis) 3D Body Mesh Skin Data
Skantek [XnView]
.SKO Sage Accounting Software Executable
.SKP Sage Accounting Software Print Format
.SKR Microsoft ScriptIt
Pretty Good Privacy (PGP) Private Keyring
.SKY ActiveSky Movie Clips for Palm OS
.SKZ coverXP Skin File
.SL S-Lang Program File
PACT's Save Layout
EROSION 3D Soil Parameters [Format (pdf)]
.SLB AutoCAD Slide Library
.SLC Telix Compiler SALT Script
.SLD AutoCAD Slide
STABCAL (stability calculation for aqueous systems) File
Paint Shop Pro Styled Line
Superlister
.SLDASM Solidworks Assembly File
.SLDDRW Solidworks File
.SLDLFP Solidworks File
.SLDPRT Solidworks File
.SLF Shopcalc List File (Cabinet Door & Drawer Cutting List Calculator)
Suppose Stand List File
SLIDE: Scene Language for Interactive Dynamic Environments File
SuperLink Folder Manager for Readers
Mail Warden
Segment Layout File (IMS Database related)
SortWizard Export Format
.SLG Chromeleon Audit Trail
AutoCAD Status Log
.SLI MagiCorp Side Service Slide
.SLK Data Exchange File (Symbolic Link - Often used by Excel)
Timeslips Lock File
.SLL Sound File
Spreadsheet Load Library (part of Microsoft Office Web Components)
.SLM Microsoft Visual FoxPro
.SLN Microsoft Visual Studio Solution
.SLP Timeslips Data File
.SLT Telix SALT Script Application
Super Level Loader Snapshot [Format]
FinSafe Terminal Smartlet
(small secure program that runs in terminal - also see .SLX)
K-Meleon Browser Settings
.SLW Settler LITE for Windows Data File
.SLX FinSafe Terminal XML Smartlet Control (also see .SLT)
Superlister
.SLY Parts of a Lilypond Guitar File (ASCII text)
.SM Smalltalk Program File
SoftSpoken Mailer Mailing List
ScriptMaker Script
Simentor Data File
Samna Word Text File
StepMania Song File (StepMania plays rhythm games)
.SM3 DataCAD Symbol File
.SMC Super Nintendo Game-console ROM Image [See ZNES or SNES9x]
.SMCL Stata Saved Formatted Logs
.SMD StarOffice Mail
OpenOffice.org Mail Document
Sega Genesis/Mega Drive Emulator [Emulator Zone]
Polyphonic Ringtone File for Phones
.SMF StarOffice Formula
OpenOffice.org Formula
Smartfax Fax
Standard MIDI File [Quicktime]
.SMG inChorus Media Player File
(inchorus.com appears to be no longer available,
the player may still be available if you search for it)
.SMHT Sealed MHT Archive [Unsealer]
.SMI RealPlay SMIL File
Self Mounting Image File (Apple Macintosh)
.SMIL Synchronized Multimedia Integration Language [RealPlay]
.SMK Smacker Compressed File
Starcraft Portrait File
.SML Simple Markup Language
Synchronized Multimedia Integration Language File [RealPlay] [Quicktime]
.SMM Ami Pro Macro
.SMOV Sealed QuickTime Movie File [Unsealer]
.SMP Sample or Samplevision Format
Sound File [Linux Player]
Ad Lib Gold Sample
PhotoImpact Gallery File
Screensaver Maker Project File
.SMP3 Sealed MP3 File [Unsealer]
.SMPEG Sealed MPEG Movie [Unsealer]
.SMPG Sealed MPG Movie [Unsealer]
.SMR Spike2 Data File (Waveform and time stamp data capture and analaysis.)
.SMRD Adobe InDesign Import/Export Filter
.SMS Microsoft Package Definition File (used now in place of .PDF)
Sega Master System Emulator
.SMT HiPer-Six Memo File
SmartWare II Text File
Creator Simulation Symbol File
.SMV Streaming Mobile Video File [Viewer]
Matlab File
Cadence Symbolic Model Verifier File
.SMWT Adobe InDesign Import/Export Filter
.SMX Statistica Matrix Spreadsheet
.SMZIP StepMania Package File (A renamed standard ZIP file)
.SNA Z80 Game Snapshot [Format]
.SNAP Mirage Microdrive Snapshot [Format]
.SNAPSHOT Mirage Microdrive Snapshot [Format]
.SNB SigmaStat File
.SNC Act! Modem Sync File
.SND Sound Clip (Raw Sound + Text Headers metafile) [IrfanView]
Raw Unsigned PCM Data
AKAI MPC-series Sample
NeXT Sound
Macintosh Sound Resource
Heroes of Might & Magic 3 Archive [Dragon UnPACKer]
.SNES Super Nintendo Game File (unverified)
.SNG Midisoft Studio MIDI Song
.SNI MDK Archive [Dragon UnPACKer]
.SNK Strong Name Key File (part of the .NET architecture)
.SNM Netscape Mail
.SNO SNOBOL Program File
Siege Editor Node
.SNOOP Sun Snoop Capture File
.SNP Snapview Shapshot
Microsoft Access Snapshop [Viewer] (page of Access report preserves layout, etc.)
CoffeeCup HTML Editor Snippet
Computer Eyes Video Output
.SNT Microsoft Sticky Notes (accessory for Windows XP tablet PC edition - due end 2002)
.SNX Second Nature Software Graphic
Mirage Microdrive Snapshot Extended Version
StarCraft Saved File
.SO Oberlin DRAGN Graph Algorithm
UNIX Shared Library Function (similar to .DLL file)
.SOA Sage MAS 90 Accounting Software File
.SOC SociometryPlus Sociometric Group
.SOD Star Trek Armada 3D Image File
.SOE Shadows of the Empire
.SOI MENSI 3D Laser Enhanced 3D Scanner File
.SOL Game Solution (various games)
Flash MX SharedObject
.SOM Paradox Sort Info
Quattro Pro Network Serial Numbers
.SOU SB Studio II Sound
.SP Splint Compressed Archive File (UNIX)
VgaSpec/Spectrum Snapshot [Format]
.SPA SmartPA Saved Capture File
Thermo Nicolet OMNIC File
Smart Protocol Analyzer Real Time Communication Data
Macromedia FutureSplash File
.SPB SpareBrains (PocketPC Data Storage)
.SPC Multiplan Program
WordPerfect Temp File
Interact Shark Port Code Save (SharkPort=code/game save xfer kit for PlayStation 2)
SNES Audio file
PKCS #7 Certificate
Spectrum 512 Compressed File [XnView]
.SPD Harvard Bitstream Typefaces (Harvard Graphics taken over by Serif)
PostScript Printer
Mini-driver
Speech Data File
Speedo Scalable Font
Adobe Patch File
.SPDF Sealed PDF File [Unsealer]
.SPF Site Publisher Profile
EnerGraphics Slide Presentation
StruCad 3D Model File
.SPG Sprint Glossary
.SPH SDR99 Speech Recognition Task SPHERE Waveform
Ribbons Sphere (Molecular graphics software)
.SPI Scanner Graphics
Stupsi Script (Software Update Utility)
.SPJ Site Publisher Project File
.SPL Compressed Archive File
Printer Spool File [Microsoft Knowledgebase Article]
Macromedia FutureSplash File
Sprint Printer Driver
Sample File
Spell Checker
Digitrakker Sample (by n-FaCToR)
Shockwave Flash Object
Split Files Shell Extension
Infinity Game Engine Spell [More Info]
.SPM WordPerfect File
.SPN WordPerfect Distribution File
.SPNG Sealed PNG Graphic [Unsealer]
.SPO SPSS Statistical Program
.SPOP InterTrust SPOP (browser Plug-in InterTrust Redemption Wizard)
.SPP Sprint Printer File
Serif PhotoPlus Native Format File
.SPPT Sealed PowerPoint File [Unsealer]
.SPR Sprint Document Letter
Foxpro Generated Screen Program
RiscOS Archimedes Sprite Format
Star Trek Armada Sprite Information
NeroMix File
.SPRITE RiscOS Archimedes Sprite Format
.SPS Sprint Screen Driver
SharkPort File (transfers game saves from computer to PlayStation2)
VAX/VMS Source Code
Spectrum 512 Smooshed File [XnView]
Oracle Package Specification
.SPSS SPSS Database File [PSPP Free Version Info]
.SPT SPITBOL Program File
Liquid Audio Player Secure Portable Track File
MITAC Disk/System Management Utility Pack Support File
.SPU Spectrum 512 [XnView]
.SPW SigmaPlot Worksheet
.SPX Foxpro Compiler Screen Program
Screen Peace Extension
.SPZ Spazz3d VRML File
.SQ7 Daktronics Venus 7000 Electronic Sign Sequence
.SQB SyQuest Backup
SQLBat Script File (SQL Script Interpreter)
.SQC Structured Query Language Common Code File [SQL]
.SQL Structured Query Language Data [SQL]
.SQM Operation Flashpoint Mission
.SQR Structured Query Language Program File [SQL]
.SQS Operation Flashpoint Script
.SQT Technics Sx KN 6000 Keyboard Multiple Sequence File
.SQZ Compressed Archive File
.SR Sun Raster Graphic [XnView]
.SR1 SIR (Scientific Information Retrieval) Database
.SR2 SIR (Scientific Information Retrieval) Database
Omron CX-Supervisor (Factory Automation)
.SR3 SIR (Scientific Information Retrieval) Database
.SR4 SIR (Scientific Information Retrieval) Database
.SRA Sybase PowerBuilder Application
.SRB Corel ClipArt ScrapBook
.SRC Sourcecode (various)
Infinity Game Engine Text Storage (Torment only) [More Info]
ProWORX Nxt Search Data (Found in the NxT directory)
.SRD PowerBuilder Data Window
.SREC ASCII Load File
(used by various systems for loading binary data into a device or memory)
.SRF Sun Raster Graphic File
Siebel Repository File (compiled objects)
PowerBuilder Function
.SRG Microsoft Software Self-Registry File
(registry keys that get rewritten when software re-registers itself)
.SRH Remedy Action Request System Client Saved Search
.SRI Voice It Link Compressed Voice File [Free player]
.SRJ PowerBuilder Project
.SRM Super Nintendo ROM Saved File (saved game)
PowerBuilder Menu
.SRP QuickLink Script
Gregg Keyboarding Configuration
.SRPM Redhat Linux RPM Source File
.SRS PowerBuilder Structure
Search and Replace Script
.SRT BSplayer Subtitle File
SDR99 Speech Recognition Task Speech Recogniser Transcript
Omron CX-Supervisor (Factory Automation)
.SRU PowerBuilder User Object
.SRV NewsPro for Newsfeeds.com Servers Info
BNBSURVEY Configuration File
(survey script for Unix and Windows Servers)
North American Locomotive Works
FBB Initialization File (bulletin board software for amateur packet-radio)
(INIT.SRV)
.SRW PowerBuilder Window
.SS Splash Bitmap Graphic
DrScheme Programming Environment File
XShipWars Sound Scheme File
Ribbons Protein File (Molecular graphics software)
Oberlin DRAGN Graph Algorithm
.SSA Subtitles
Empire Earth Custom Assets File
.SSB SmartSync Software SmartSync Pro Program Settings
.SSC HP Library and Tape Tools Script
SwordSearcher File
Scrippy File (E-mail stationary)
.SSD SAS Database
Snagit Studio Design File
.SSF Enable Spreadsheet File
.SSH2 SSH Secure Shell Client
.SSI Installer/GD Software Setup Information
SriSun [XnView]
.SSK SwordSearcher File
SmartSketch File (Use Hijaak to convert -
SmartSketch became FutureSplash which became Macromedia's Flash)
.SSL Corel Flowchart Symbol Library File
.SSM RealPlay Standard Streming Metafile
.SSP SAS Transport Data
Axialis Screensaver [XnView]
SmartSync Software SmartSync Pro (File used during remote synchronization)
.SSS Sudden Strike Saved Game
.SST Certificate Store
Sea Surface Temperature File
.SSWF Sealed Flash File [Unsealer]
.SSX ScreenShare Data File
VersaPro Smart Store Document
.SSY ScreenShare Compressed Data File (compressed .SSX file)
.ST SMALLTALK Program File
Scream Tracker Instrument Library
Atari ST Disk Image [Use Steem Engine Emulator]
NeoPaint Stamp File
.ST3 MIDI Karaoke File
.ST4 SBIG CCD Camera ST-4 [XnView]
.ST5 SBIG CCD Camera ST-5 [XnView]
.ST6 SBIG CCD Camera ST-6 [XnView]
.ST7 SBIG CCD Camera ST-7 [XnView]
.ST8 SBIG CCD Camera ST-8 [XnView]
.STA Eudora File
Statistica Spreadsheet
Spinmaker Plus Stack
Reflection Saved State
Brazilian MSX Emulator - BrMSX Saved State
MicroSim PCBoard Statistics Report
.STB Genus Stub Library
AutoCAD R2000 Plot Style Table File
.STC OpenOffice.org Spreadsheet Template
StateClock File
.STD Prosa State Transition Diagram Graphic
SureThing CD Labeler Document File (Labels CDs, DVDs, Jewel Cases, etc.)
LocoScript Standard Script File
OpenOffice.org Drawing Template
.STE DataPerfect File
.STEALTH Likely a text file (e.g., README.STEALTH)
.STEP AP203 Step File
.STF ShrinkToFit Compressed Archive File
Setup Information
Structured File
.STG PageKeeper Storage File
Microsoft ActiveSync (backup of data on mobile device)
Statistica Graphics File
Visual Pinball High Scores (and other data: vpreg.stg)
.STI Stickies (notes)
OpenOffice.org Presentation Template
Datastitch Embroidery Design/Editing/Lettering/Stitch Transfer
.STK Personal Stock Monitor File
CRiSP Harvest File
.STL Certificate Trust List
Macromedia Fireworks Style Library
CAD Software Solid Modeling/Prototyping File (Stereo Lithography File)
SPEFO Stellar Spectra Analysis File
Screen Subtitling Systems Win2020 Screen Subtitle
.STM Sound File
Prosa State Transition Diagram Model
Scream Tracker v2 Module
SHTML File (HTML File Containing Server Side Directives)
SDR99 Speech Recognition Task Time Segment Time Marked File
PhotoStudio Stamp [XnView]
Secure Login File for Navy's NOWS (https://nows.cnrf.navy.mil/now/login.stm)
LloydsTSB Statement File (Bank statement in CSV format)
.STML Sealed HTML File [Unsealer]
.STN STiNG File (Iterated Systems resolution-on-demand images)
ArcView Geocoding Standardization File
.STO Genus Pascal Stub OBJ File
Infinity Game Engine Store File (stock, prices, etc.) [More Info]
.STP PageKeeper Packed Storage File
DART Pro 98 System Settings
AP203 Step File
Sierra NASCAR Racing 2002 Track Picture
.STR dBase Structure List
DataPerfect Structure File
Fifa 2002 Music File
Sceensaver
Statistica Report File
Stream File (Playstation Discs)
Music File
.STS Microsoft C Project Status Info
Scream Tracker Song
Nimbus 7 SAMS Data File (status data)
MicroSim PCBoard Status of Autorouting Run
.STT Automap Template
SureThing CD Labeler User Template File
.STU Tarantella Enterprise 3 3270 Emulator Style File
xyALGEBRA File
Pinnacle Studio Project (Video editing)
.STV sofTV.Author File (Streaming Video Web Authoring)
.STW SmartTerm Data File
Statistica Workbook File
Neopaint Stamp [XnView]
OpenOffice.org Text Document Template
.STX Simply Tax Form
EditPlus Syntax File
SmarText E-book
SBIG CCD Camera ST-X [XnView]
Datastitch Embroidery Design/Editing/Lettering/Stitch Transfer
.STY Style Sheet (various)
Microsoft Interactive Music Control
LaTeX2e Style
.STZ Screamtracker 2/Module File [use Winamp]
.SUB CloneCd Sub Channel Data
Divx Subtitles
SubmitWolf File (search engine submission program)
Insight II Subset Definition File
.SUD Super Project Analyzer Data
.SUI Simple User Interface Toolkit Library
.SUITE Winstyles Theme (customizes the Windows Desktop)
.SUL GFA Ray-Trace [XnView]
.SUM Summary (various)
.SUMP Easy Palette Gallery or Library
.SUN Sun Raster Graphic File [XnView]
.SUNIFF Sun TAAC File [XnView]
.SUO Microsoft Visual Studio Solution User Options
.SUP WordPerfect Supplemental Dictionary
Super Project Analyzer Project
Pro/ENGINEER Master Configuration File (CAD)
.SUR Surveyor Document
.SV$ AutoCAD Autosave File
.SV? RollerCoaster Tycoon Saved Game (?=single digit number)
.SV1 Transport Tycoon Saved Game [TT Info]
.SV4 Infogrames Entertainment RollerCoaster Tycoon Saved Game
.SVB Statistica Macro File
.SVC Statistica Macro File
Simple Visual Compiler
.SVD Word Backup File 
[Buy Office XP at Shop.Microsoft]
.SVF WinSFV (Checks for damaged .rar files)
.SVG Word Backup File [Buy Office XP at Shop.Microsoft]
Scalable Vector Graphics File
Lode Runner Saved Game
Metis Model Browser Image (Tool for visualizing,
navigating and querying Metis enterprise models)
.SVGZ Compressed Scalable Vector Graphics File
.SVI Mimio Ink Files
Red Faction Game File
.SVL Scramdisk VoLume (Win98 freeware also opened by DriveCrypt)
.SVM MRC-PRO Format Music File
.SVO Statistica Macro File
Transport Tycoon Custom World [TT Info]
.SVP WISCO Survey Power
SwiftView Command File
.SVQ Roland Keyboard Midi Sequence
MRC-PRO Format Music File
InfoBind File Format (encryption format used in Fuji
SmartMedia cards to prevent copying)
.SVS Word Backup File [Buy Office XP at Shop.Microsoft]
DART Pro 98 Spectral View Settings
.SVX Interchange File Format, 8SVX/16SV
Amiga 8SVX Sound
Statistica Macro File
.SW Audio File
Raw Signed Word (16-bit) Data
SmartWare Spreadsheet (requires login)
EARS Component File (EARS = UK Liberal Democrats Election Agents Record System)
[Filename starts with E]
.SW3 Scriptware File (scriptwriting word processor)
.SWA Shockwave Audio File
SATLOC FreeTrac (GPS Guidance and mapping)
.SWB PageMaker 7.0 ColorSync Component
Super Win-EBook 98 File
Sametime Whiteboard File
.SWD Storybook File (educational)
Flash MX File with Debugging Infomation
Sabiston Textbook
.SWF Macromedia Flash Format [Alternate] [IrfanView]
Microsoft Sidewinder (Force Feedback Joysticks) Profile Activator
.SWFS Dreamweaver File
.SWG Swag Reader Packet
.SWI Swish Data File (Swish makes Flash files)
.SWJ Solidworks Journal File
.SWK Swapkeys Keyboard File
.SWL Macromedia Flash Format [Alternate]
.SWP Sprint Backup File
Swap File
Spider Writer Project File
Omron Syswin API Description (file API-PC.SWP)
.SWS S-PLUS Workspace
Swift Generator Instruction File
SmartWidgets File
Screen Writer Studio File
VHDL Simili Sonata Project File
Science Workshop File
.SWS0 Screen Writer Studio File Backup
.SWT VB Setup Wizard Template File
Macromedia Authoring Flash File
Swift Generator Template File
Space Watch Pro Data File
.SWW QSE FMEA/APQP Application Database (Risk Analysis application)
.SXC OpenOffice.org Spreadsheet File
.SXD OpenOffice.org Draw File
.SXF Secure eXchange Format File (Phocis Licensing Client)
.SXG OpenOffice.org Master Document
.SXI OpenOffice.org Presentation File
.SXLS Sealed Excel File [Unsealer]
.SXM OpenOffice.org Math File (Forumla)
.SXP OpenOffice.org Presentation File
.SXW OpenOffice.org Text Document
Staroffice Word Document
.SY# Darn! Backup Files
.SY1 Ami Pro Smartpix Symbol Library
.SY3 Harvard Symbol File (Harvard Graphics taken over by Serif)
.SYD Sysedit Backup File
.SYL SYLK Spreadsheet Format
.SYM Symbol Table (various)
Borland C++ Precompiled Headers
.SYN Synonym File
TextPad Syntax Definition
SDSC Image Tool File
Breakneck / N.I.C.E.2 Archive [Dragon UnPACKer]
Excessive Speed Archive [Dragon UnPACKer]
Synthetic Universe [XnView]
Connectivity Memory Model Specific Connectivity Initialization Input File
.SYNU Synthetic Universe [XnView]
.SYS System Configuration
System Device Driver
.SYW Harvard Symbol Graphic (Harvard Graphics taken over by Serif)
Yamaha SY-series Wave Files
.SYX SysEx MIDI File
.SZ WinAmp Skin [To use, rename to .WSZ)
.SZ0 Binary File Format (used when uploading via a COM port)
.SZF SilverDAT II Data Exchange Format
(Calculate vehicle repair costs. ASCII text file.)