.??_ 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
.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
.S19 Motorola Assembly-Language Program ASCII-HEX Data File
.S28 Genesis or Sega32X Rom Image
.S2P Sonnet File
.S3D EverQuest File
.S3I ScreamTracker v3 Instrument
.S3M ScreamTracker v3 Module
ScreamTracker v3 Sound File
.S4T Patent Application Specification Authoring Tool (PASAT) File
.S4W Patent Application Specification Authoring Tool (PASAT) File
.S8 Simul8 Simulation
.SA1 Panasonic e-wear MP3 Player File
.SA4 STABCAL (stability calculation for aqueous systems) File
.SA8 Street Atlas File
.SAB ModelMaker File (3D scanner)
.SAC Adobe Shared Asset Catalog
.SAD Serveron Analyzer Data File
Electronic Arts Black & White Game Sound File [Dragon UnPACKer]
.SAF MusicMatch Jukebox Secure Audio File
.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]
.SAS SAS System File (statistical anaysis)
.SAT ACIS Solid Model (any ACIS-based CAD program)
.SAV Backup
Saved File (various)
Saved Configuration Info (various)
.SB Audio File
Raw Signed Byte (8-bit) Data
.SBD Storyboard Editor Storyboard
.SBF Superbase 95 File
.SBI Sound Blaster Instrument File
.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
.SBM Hello Network HelloCombined Media Player (MultiPlatform Streaming Media Player)
.SBN ArcView Optional Shape File (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 Optional Shape File (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
.SCA SCA Datafile
Scala InfoChannel Script
.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
.SCE SoftCuisine Data Exchange File
.SCF Windows Explorer Command
Symphony Spell Checker Configuration
Photo Soap2 File
ScoreMaker Multimedia Show
.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
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
.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]
.SCS StuffIt Saved Criteria
OzWin CompuServe E-mail/Forum Access SYSOP File
Samsung Q105 Phone Screen Saver
Omron CX-Supervisor (Factory Automation)
.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 MS FoxPro Screen File
ColorIRX Image File [XnView]
Stanford Chart
Starcraft Map File
.SCY ReaGeniX Security File
.SD Sound Designer I Audio
.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
Fidonet Software Distribution Network Archive Description
SoftCuisine Data Archive
PGP Encrypted Executable
.SDB Simply Accounting File
Group Mail Subscriber Plug-in File
MS Win2000 Security Configuration and Analysis Database
.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
.SDG Star Office Gallery [XnView]
.SDI Fidonet Software Distribution Network Info
.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
.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
.SDR SmartDraw Drawing
.SDS StarOffice Chart
Raw Midi Sample Dump Standard File
.SDT SmartDraw Template
Dungeon Keeper 2 Archive [Dragon UnPACKer]
Theme Park World Archive [Dragon UnPACKer]
.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
.SDV Pinnacle Studio DV Video Editing Project
.SE ScopeEdit Project 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)
.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
.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
.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
Configuration (various)
.SEU Serials 2000 Encrypted S2K Update
.SEW Janome (New Home) Sewing Machine File
Embroidery Design File [possibly read with Melco Sizer Software]
.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
.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]
.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
.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
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
.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)
.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)
.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
.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)
.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
Show File
.SHX AutoCAD Shape Entities
GIS Software Geographic Shape Index File [GIS info]
(ArcView, et.al.) (JShape/FShape)
.SI SoftImage Image File [XnView]
.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
.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)
.SIT StuffIt Compressed Archive File (Multiple platforms)
Sinclair Snapshot
.SITHQX StuffIt Compressed Archive File (Multiple platforms)
.SIZ Oracle 7 Configuration
.SJ1 Sega SJ-1 DIGIO [XnView]
.SJF Split Files Shell Extension
.SJPG Sealed JPEG File [Unsealer]
.SJX Seljax Estimating and 3D Design
.SKA PGP Secret Keyring
.SKB QuickPOS (Point-Of-Sale) Standard Keyboard Layout File
.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
.SKL Authorware Resource
.SKN FileWrangler/SecurDesk!/ImageForge Graphic Skin
eRocket eBook Skin
The Sims (Maxis) 3D Body Mesh Skin Data
Skantek [XnView]
.SKR Microsoft ScriptIt
.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
.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
.SLI MagiCorp Side Service Slide
.SLK Data Exchange File (Symbolic Link - Often used by Excel)
Timeslips Lock File
.SLL Sound File
.SLM Microsoft Visual FoxPro
.SLP Timeslips Data File
.SLT Telix SALT Script Application
Super Level Loader Snapshot [Format]
.SLW Settler LITE for Windows Data File
.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
.SM3 DataCAD Symbol File
.SMC Super Nintendo Game-console ROM Image [See ZNES or SNES9x]
.SMCL Stata Saved Formatted Logs
.SMD StarOffice Mail
Sega Genesis/Mega Drive Emulator
.SMF StarOffice Formula
Smartfax Fax
.SMI RealPlay SMIL File
Self Mounting Image File (Apple Macintosh)
.SMIL Synchronized Multimedia Integration Language [RealPlay]
.SMK Smacker Compressed File
.SML Simple Markup Language
.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
.SMP3 Sealed MP3 File [Unsealer]
.SMRD Adobe InDesign Import/Export Filter
.SMS MS Package Definition File (used now in place of .PDF)
Sega Master System Emulator
.SMT HiPer-Six Memo File
SmartWare II Text File
.SMWT Adobe InDesign Import/Export Filter
.SMX Statistica Matrix Spreadsheet
.SNA Mirage Microdrive Snapshot [Format]
.SNAP Mirage Microdrive Snapshot [Format]
.SNAPSHOT Mirage Microdrive Snapshot [Format]
.SNB SigmaStat File
.SNC Act! Modem Sync File
.SND Sound Clip [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
.SNP Snapview Shapshot
MS Access Snapshop [Viewer] (page of Access report preserves layout, etc.)
CoffeeCup HTML Editor Snippet
Computer Eyes Video Output
.SNT MS 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
.SOA Sage MAS 90 Accounting Software File
.SOC SociometryPlus Sociometric Group
.SOE Shadows of the Empire
.SOL Game Solution (various games)
.SOM Paradox Sort Info
Quattro Pro Network Serial Numbers
.SOU SB Studio II Sound
.SP Splint Compressed Archive File (UNIX)
VgaSpec/Spectrum Snapshot [Format]
.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
.SPDF Sealed PDF File [Unsealer]
.SPF Site Publisher Profile
EnerGraphics Slide Presentation
.SPG Sprint Glossary
.SPH SDR99 Speech Recognition Task SPHERE Waveform
.SPI Scanner Graphics
.SPJ Site Publisher Project File
.SPL Compressed Archive File
Printer Spool File [MS Knowledgebase Article]
Sprint Printer Driver
Sample File
Spell Checker
Digitrakker Sample (by n-FaCToR)
Shockwave Flash Object
Split Files Shell Extension
Infinity Engine Game Spell
.SPM WordPerfect File
.SPN WordPerfect Distribution File
.SPO SPSS Statistical Program
.SPP Sprint Printer File
Serif PhotoPlus Native Format File
.SPPT Sealed PowerPoint File [Unsealer]
.SPR Sprint Document Letter
Foxpro Generated Screen Program
Sprite
.SPS Sprint Screen Driver
SharkPort File (transfers game saves from computer to PlayStation2)
VAX/VMS Source Code
Spectrum 512 Smooshed File [XnView]
.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
.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
.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
.SRB Corel ClipArt ScrapBook
.SRC Sourcecode (various)
.SRF Sun Raster Graphic File
Siebel Repository File (compiled objects)
.SRI Voice It Link Compressed Voice File [Free player]
.SRM Super Nintendo ROM Saved File (saved game)
.SRP QuickLink Script
.SRPM Redhat Linux RPM Source File
.SRT BSplayer Subtitle File
SDR99 Speech Recognition Task Speech Recogniser Transcript
Omron CX-Supervisor (Factory Automation)
.SS Splash Bitmap Graphic
DrScheme Programming Environment File
XShipWars Sound Scheme File
Ribbons File (protein analysis)
Oberlin DRAGN Graph Algorithm
.SSA Subtitles
.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]
.SSS Sudden Strike Saved Game
.SST Certificate Store
Sea Surface Temperature File
.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
NeoPaint Stamp 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
.STB Genus Stub Library
.STD Prosa State Transition Diagram Graphic
SureThing CD Labeler Document File (Labels CDs, DVDs, Jewel Cases, etc.)
LocoScript Standard Script 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
MS ActiveSync (backup of data on mobile device)
Statistica Graphics File
Visual Pinball High Scores (and other data: vpreg.stg)
.STK Personal Stock Monitor File
.STL Certificate Trust List
Macromedia Fireworks Style Library
CAD Software Solid Modeling/Prototyping File
.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]
.STML Sealed HTML File [Unsealer]
.STN STiNG File (Iterated Systems resolution-on-demand images)
.STO Genus Pascal Stub OBJ File
Infinity Engine Game Storage File
.STP PageKeeper Packed Storage File
DART Pro 98 System Settings
AP203 Step File
.STR dBase Structure List
DataPerfect Structure File
Fifa 2002 Music File
Sceensaver
Statistica Report File
Stream File (Playstation Discs)
Music File
.STS MS C Project Status Info
Scream Tracker Song
Nimbus 7 SAMS Data File (status data)
.STT Automap Template
SureThing CD Labeler User Template File
.STU Tarantella Enterprise 3 3270 Emulator Style File
xyALGEBRA File
.STV sofTV.Author File (Streaming Video Web Authoring)
.STW SmartTerm Data File
Statistica Workbook File
Neopaint Stamp [XnView]
.STX Simply Tax Form
EditPlus Syntax File
SmarText E-book
SBIG CCD Camera ST-X [XnView]
.STY Style Sheet (various)
MS Interactive Music Control
LaTeX2e Style
.SUB CloneCd Related File
Divx Subtitles
SubmitWolf File (search engine submission program)
.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]
.SUP WordPerfect Supplemental Dictionary
Super Porject Analyzer Project
.SUR Surveyor Document
.SV$ AutoCAD Autosave File
.SV1 Transport Tycoon Saved Game [TT Info]
.SV4 RollerCoaster Tycoon Saved Game
.SVB Statistica Macro File
.SVC Statistica Macro File
.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
.SVI Mimio Ink Files
Red Faction Game File
.SVL Scramdisk VoLume (Win98 freeware also opened by DriveCrypt)
.SVO Statistica Macro File
Transport Tycoon Custom World [TT Info]
.SVP WISCO Survey Power
SwiftView Command File
.SVQ Roland Keyboard Midi Sequence
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]
.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)
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)
.SWK Swapkeys Keyboard File
.SWL Macromedia Flash Format [Alternate]
.SWP Sprint Backup File
Swap File
Spider Writer Project File
.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
.SXC OpenOffice.org Spreadsheet File
.SXD OpenOffice.org Draw File
.SXF Secure eXchange Format File (Phocis Licensing Client)
.SXG OpenOffice.org Writer 6.0 Master Document
.SXI OpenOffice.org Presentation File
.SXLS Sealed Excel File [Unsealer]
.SXM OpenOffice.org Math File
.SXP OpenOffice.org Presentation File
.SXW OpenOffice.org Writer 6.0 Text File
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]
.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
.SZ0 Binary File Format (used when uploading via a COM port)
