
File Extensions
Windows/OS2/Apple/UNIX
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OTHER - Allowed
chars in file names - what is an extension?
Links - Converters - Multimedia Converters
graphical file
formats - Potentially harmful
extensions
internals - contributors
H
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item
Viewer for images/pictures: See Multimedia/XnView
Player for sound/music: See Multimedia/2pat20
Universal dump utility for non-destructive dump/list/string search etcdump.zip
S = Assembler source code UnixS = Mime: text/x-asmS = Modula-3 foreign assembly sourceS = MultiEdit macro sourceS = Scheme language sourceS = Source code (non-PC platforms/Unix)S#+A = (MAC FILE TYPE) Rag Time 2 text fileS#+D = (MAC CREATOR CODE) Rag Time 2S$$ = Sprint temporary sortS01 = WordPerfect Distribution FileS02 = WordPerfect Distribution FileS03 = WordPerfect Distribution FileS19 = Motorola EEPROM programmingS1K = S1000 Simnet formatS2 = Motorola S-record formatS2P = Sonnet FileS3 = Motorola S-record formatS31 = audio moduleS330 = sound fileS3D = Micrografx Simply 3D ProjectS3I = Sample file (Digiplayer/ST3)S3M = Digiplayer Sample FileS3M = Mime: audio/s3mS3M = Mime: audio/x-modS3M = Scream Tracker III music (16 channels)S3R = Rtl Ski Jump replay fileS3Z = Mime: audio/x-modS50 = sound fileS550 = sound fileS57 = vector image ( "International Hydrographic Organization's" )s6BN = (MAC FILE_TYPE) Word 6 Templates8BN = (MAC FILE_TYPE) Word 98 TemplateS_S = Eru/erd fileSA = System Sa51swe fileSA2 = Suprise! adlib tracker music module.SACM = (MAC FILE_TYPE) Microsoft Spelling FileSAD = Lucas Arts sound fileSAF = Spatial Archive Interchange FormatSAH = http://setiathome.ssl.berkeley.edu/SAIF = Spatial Archive Interchange Format, same as SAFSAL = Database Program; SQL Application LanguageSAL = SORITEC datafileSAM = Ami Professional document(Samna/Lotus Ami, Ami Pro)SAM = Mime: application/vnd.lotus-wordproSAM = MS Office 97 File Converter (DLL)SAM = SAMple fileSAM = Sound SampleSAMPLE = WADigital ReportMagic fileSAN = LUCAS arts: The Curse of Monkey Island Movie FileSAP = hyperbanner: Java animationSAR = SAR compressed file archiveSAR = Saracen Paint image formatSAS = SAS source code file (VMS)SAT = ACIS 2D/3D : Vector graphics / CADSAV = SAVed backup/configuration dataSAV = SAVed game situation (eg. NetHack)SAVE = Game Salt Lake city 2002 fileSAVEME = Mime: application/octet-streamSAY = Sound data 1 bitSB = 8bit sound data : Raw Signed PCM Byte formatSB = Audio file (Signed Byte)SB! = Superbase : Locking fileSB_ = Creativ compressed Sb16 sbide fileSBBUGREPORT = SBBugReport.Document open with: APPLOCalize.EXESBC = Smart Book compiled distribution fileSBD = Storyboard Editor data fileSBE = Spybot Excludes fileSBF = Superbase 95 FileSBGLOSSARY = SBGlossary.Document open with: APPLOCalize.EXESBI = Sound; Creative labs SoundBlaster instrumentSBIG = Santa Barbara Instruments Astronomical Image (Bitmap graphics)SBJ = Clipart Index; Micrografx Clipart or PaletteSBK = Asymetrics ToolBook System BookSBK = Creative Labs Soundfont 1.0 Bank fileSBK = Mime: application/x-tbookSBK = Mime: audio/x-sbkSBK = Multimedia Subject/book?, Metatec Corp.sbkt = (MAC FILE_TYPE) ScrapBooksbkt = (MAC FILE_TYPE) Scrapbook FileSBL = Shockwave Flash objectSBL = Stone Brook Pascal librarySBM = Image .LBMSBN = ArcView : spatial index for read-write shapefilesSBP = Dml program (Superbase 4)SBQ = Superbase : Query definition fileSBR = Source Browser for BSCMAKE (source for .bsc)SBS = Spybot Includes fileSBT = Suberbase 4 Windows notes related to recordSBV = Superbase Form definition fileSBW = Smart Book fileSBX = Adobe Illustrator TsumeSC = Ingres Embedded SQL/C Source FileSC = Framework II display driverSC = Mime: application/x-showcaseSC = Paradox PAL scriptSC = SciTex Continuous Tone image formatSC$ = Modem Bitware Fax disk1 fileSC1 = SimcitySC2 = Ms Schedule+ 7.x exportSC2 = Msx 2 Screen image formatSC2 = SimCity2000 fileSC2000 = Sim city 2000 dos tileset fileSC3 = Harvard Graphics 3.x screen device driverSC3 = Renamed dBASE III screen mask file (dBASE IV)SC3 = SimCity3000 fileSC4 = RollerCoaster Tycoon ScenarioSC? = Image ColoRix (? = resolution)(EGA Paint)SCA = SCA datafileSCAN = Thunderscan image filescav = (MAC FILE_TYPE) Disk First AidSCB = Scribble.Document open with: SCRIBBLE.EXE /ddeSCC = MSX ( = MicroSoft eXtended home computer) bitmap imageSCC = Source code control file; programming project file managementSCD = Matrix/Imapro SCoDL film recorder (SCODL = Scan Conversion Object Description Language)SCD = Mime: application/x-msscheduleSCD = Ms Schedule+ 7.x contactsSCE = SoftCuisine Data Exchange FileSCENE = Sculpt 3D/4D 3D object (Amiga)SCF = ScoreMaker multimedia showSCF = Symphony spelling checker configurationSCF = Windows Explorer Shell Command FileSCG = Bitmap image (ColoRIX)SCH = Project schedule (Schedule Publisher/Ms Schedule+)SCH = Scheme (P CAD/Orcad)SCHAKAL = Schakal chemical modeller input fileSchd = (MAC FILE_TYPE) Microsoft Email SchedulSCHEMAS = Amaya config fileSCI = Scitex Continuous Tone (CT2T) bitmap image/FaxSCI = System Configuration InformationSCITEX = Scitex Continuous Tone (CT) CMYK color images and grayscale imagesSCL = SCALA ScaleSCM = Lotus ScreenCam MovieSCM = Mime: application/vnd.lotus-screencamSCM = Mime: application/x-lotusscreencamSCM = Mime: text/x-script.guileSCM = Mime: text/x-script.schemeSCM = Mime: video/x-scmSCM = Scheme language source code fileSCN = Calgari trueSpace2 File FormatSCN = Kermit screen dump or fileSCN = Minolta SCeNe fileSCN = Visual BasicSCNE = (MAC FILE_TYPE) Infini-D SceneSCO = SCOre (best results in games)SCODL = Bitmap image (Agfa slide file)SCP = BITCOM scriptSCP = ColoRIX bitmap imageSCP = Microsoft Dial-Up Networking ScriptSCP = Mime: text/plainSCR = fax imageSCR = Screen dump/tbvSCR = Screen fontSCR = Sun Raster Images image formatSCR = Windows screensaverscri = (MAC FILE_TYPE) ExtensionSCRIPT = Win Help related fileSCRN = (MAC FILE_TYPE) StartUpScreSCRN = Startup ScreenSCS = ScreenCam Script; Lotusscsi = (MAC FILE_TYPE) Apple HD SetupSCT = FoxPro additional (FPT) screen description fileSCT = Mime: text/scriptletSCT = SciTex Continuous Tone bitmap imageSCT = Windows Script ComponentSCT01 = SAS catalog (Unix)SCU = ColoRIX bitmap imageSCV = Winphone connection fileSCX = Chart (Stanford Chart)SCX = ColoRIX bitmap imageSCX = FoxPro main (DBF) screen description fileSCX = MS Class Browser formSCY = ReaGeniX security fileSCZ = Wingz dataSD = Entropic Sound Data format : AudioSD0 = Dali Raw image/tbvSD1 = Dali Raw image/tbvSD2 = Dali Raw image/tbvSD2 = Sound Designer 2 fileSD_ = Audio Utility Midimach compressed fileSDA = Software Distribution Network file archive descriptionSDB = SideKick 2 DatabasesDBN = (MAC FILE_TYPE) Word 4/5 TemplateSDC = StarOffice StarCalc SpreadsheetSDD = StarOffice StarImpress PresentationSDE = Drumbeat (Internet application) exported datasdev = (MAC FILE_TYPE) Control Strip ModuleSDF = MDL Isis SDF chemical modeller input fileSDF = Mime: application/e-scoreSDF = Mime: chemical/x-mdl-sdfSDF = Source Definition File (Sourcer)SDF = System Data Format file (fixed lenght ascii text)SDG = Star Office Gallery image formatSDI = QuickBooks; DataSDI = Software Distribution Network Info fileSDI = Super Data InterchangeSDK = Roland S-550/S-50/W-30 Disk ImageSDL = Alias Wavefront Scene Description LanguageSDL = ParadoxSDL = Parsys hardware network description fileSDL = SmartDraw LibrarySDML = Mime: text/plainSDML = Spatial Data Modeling Language (VRML) by Silicon GraphicsSDN = Software Distribution Network compressed file archive (pak251.exe)SDP = IBM Storyboard PIC imageSDP = Mime: application/sdpSDP = Mime: application/x-sdpSDP = RealAudio Scalable MulticastSDPC = "Cocreate SolidDesigner" DatafileSDR = Mime: application/sounderSDR = SmartDraw drawingSDR = Sounder musicSDS = MIDI Sample sound (DUMP Standard File)SDS = Mime: application/x-onliveSDT = QuickBooks; DataSDT = SmartDraw TemplateSDTS = Spatial Data Transfer Standard (10m and 30m 7.5' DEM )SDV = Semicolon Divided Values fileSDW = (header) files for MrSID (ESRI picture files)SDW = Amidraw vector imageSDW = SourceSafe files in Shadow DirectorySDW = WordPro Drawing; LotusSDX = Sample DUMP Exchange FileSDX = sound fileSDY = Starmoney fileSE = ScopeEdit Project FileSE = Dll Directx Migrate fileSE1 = Synthedit fileSE_ = Midiprg Cakepro compressed fileSEA = Mime: application/seaSEA = Mime: application/x-seaSEA = Mime: application/x-stuffitSEA = self-expanding archiveSEA = StuffIT Expander archive format (orig. Macintosh)SEAWIFS = SeaWiFS Frame Formatter (Level 0) output file formatSEC = Diskreet encrypted fileSEC = Disney Animation Studio secured animation fileSEC = Pretty Good Privacy secret key ring fileSECURITY = Javasoft Jre 1.3 lib security fileSED = Sed/unix doc fileSEE = Mime: application/vnd.seemailSEF = Steganos Encrypted FileSEG = Compressed File SegmentSeg1 = (MAC FILE_TYPE) StuffIt SegmentSeg2 = (MAC FILE_TYPE) StuffIt SegmentSeg3 = (MAC FILE_TYPE) StuffIt SegmentSegN = (MAC FILE_TYPE) StuffIt SegmentSEL = PaintShop Pro Selection FileSEMI = Spartan Semi-Empirical chemical modeller input fileSEO = ScopeEdit Object FileSEP = Printer separator pageSEP = Tagged Image File Format (TIFF) bitmap imageSEQ = Atari STAD bitmap image/animation?SEQ = Bubble Chamber Sequential Instruction FileSEQ = PowerTracks Pro Audio, by PG Music, Inc sequence filesSEQ = Sequence files of PowerTracks Pro Audio, by PG Music, Inc.SEQ = Stad image formatSER = Mime: application/x-java-serialized-objectSER = Webalizer Lang fileSERVER = Analog fileSES = Clarion Modula-2 session infoSES = Cood Edit Session fileSESSION = Internet Security Scanner file (ISS)SET = 1st Reader configurationSET = File Set for MS BackupSET = Mime: application/setSET = SETup data or infoSET = Symphony driver sets created by InstallSEU = Serials 2000 Encrypted S2K UpdateSEW = Generic : Sewing program fileSEX = Urban Chaos Game FilesEXT = (MAC FILE_TYPE) Text TemplateSF = OS/2 WPS Attribute StorageSF = IRCAM Sound File (CSound package/MixView sound sample editor)SF = Signature instructions fileSF = WPS attribute storage (OS/2 WorkPlace Shell)SF0 = Windows Sytem file check fileSF2 = Creative Labs Soundfont 2.0 Bank fileSF? = Bitstream Printer FontSFAX = (MAC FILE_TYPE) STF Sent FaxSFB = HP soft fontSFC = Windows System file check fileSFD = SoundStage : Sound File DataSFE = Split Files Shell ExtensionSFF = Fritz!Fax documentSFF = Scene File FormatSFF = Structured Fax Format image formatSFF = Structured File FormatSFI = Bitmap; SIS Frame GrabberSFI = Printer font (HP LaserJet landscape) (Ventura Publisher)SFI = SIS Framegrabber imagesfil = (MAC FILE_TYPE) Sound FileSFK = Sonic Foundry SoundForge : Sound fileSFL = PCL 4 bitmap font (landscape) (Intellifont/Ventura Publisher)SFM = Dart fileSFN = SPX fontSFO = Bitstream font file - fontware formatSFP = Pcl 4 bitmap font (portrait) (Intellifont/Ventura Publisher)SFR = Sonic Foundry Sample Resource : SoundSFS = Pcl 5 scalable font file (Intellifont)SFT = ChiWriter screen fontSFV = Easy SFV CreatorSFW = Seattle Film Works graphicsSFX = Self-extracting file archive script (RAR)SG = Snap Quiktour fileSG = SnapGraphix : Image fileSG1 = Graphics (Stanford Graphics)SGD = Lahey Blackbeard help fileSGF = Starwriter document with graphicsSGI = Silicon Graphics workstation, Irix RGB bitmap imageSGI-LPR = Mime: application/x-sgi-lprSGL = StarOffice Master DocumentSGM = IETF SGML document (Standard Generalized Markup Language)SGM = Mime: text/sgmlSGM = Mime: text/x-sgmlSGML = IETF SGML document (Standard Generalized Markup Language)SGML = Mime: text/sgmlSGML = Mime: text/x-sgmlSGO = 3d Graphic genericSGP = STATGRAPHICS Plus statisticsSGT = Save/get keyboard macro (Signature)SGW = Snap Quiktour fileSGX = Lahey Fortran help file indexSH = Internet ProgramSH = Mime: application/x-bshSH = Mime: application/x-shSH = Mime: application/x-sharSH = Mime: text/x-script.shSH = SHell script (Unix sh or bash) (ASCII)SH = Unix ASCII file archive created by SHAR (use unshar)SH3 = Harvard Graphics 3.0 presentationSHA = Mime: application/x-sharSHA = Unix SHARSHADE = Rayshade ray tracerSHAR = Mime: application/x-bshSHAR = Mime: application/x-sharSHAR = SHell ARchive script (Unix)SHB = Corel Show presentation/backgroundSHB = Windows Shortcut into a documentSHCF = (MAC FILE_TYPE) Shared OLE DLLSHD = Metatools' Bryce Support file (Materials catalogue)SHD = W95 spool fileSHE = 2D-Medusa CADSHE = Windows 95 ".ShellExt"SHELX = ShelX chemical modeller input fileSHEX = Motolora hex-formatSHF = PGP ShareSHG = "Segmented Hypergraphics" Bitmap with hot-spots, created by "SHED.EXE", compiled with "HC.EXE" (Windows help file compiler)SHH = Automated Setup templateSHK = ShrinkIt compressed Apple II file archiveSHL = Inno Setup String Tables fileshlb = (MAC FILE_TYPE) Shared LibrarySHM = SHell Macro (WordPerfect Library)SHN = SHorteN compressed audio file, lossless format but larger than MP3SHO = Mime: application/x-showcaseSHOW = Mime: application/x-showcaseSHOWCASE = Mime: application/x-showcaseSHP = AutoCAD shape file and source file for text fontsSHP = ESRI shapefilesSHP = Image FormatSHP = Printmaster icon librarySHP = SHaPe file (ESRI GIS & Mapping software)SHR = Unix Shell Archive (ASCII) (SHAR)SHRP = Apple IIG imageSHS = Shell Scrap ObjectSHS = W95/98 ClipboardSHT = HTML,; SHTM, SHTML; structured HTMLSHTM = Same as SHTSHTML = Mime: magnus-internal/parsed-htmlSHTML = Mime: text/htmlSHTML = Mime: text/x-server-parsed-htmlSHTML = Same as SHTSHTML = SSI-HTML (SSI = Server-Side Include): dynamic HTML pageSHTML3 = Shtml fileSHV = graphic files read by Husqvarna Viking Designer 1 sewing machine (embroidery files that control stitching of the designs)SHW = ETC theatrical lighting control consoles. stores cues, dimmer-channel patch, submaster assignments, and general settings. It can be read and edited on a PC by ETC's free software, Expression Off-Line, available at www.etcconnect.com.SHW = Corel Show | Corel Presentations ShowSHW = Mime: application/presentationsSHW = Presentation; Harvard Graphics DOS 2.x ShowSHX = AutoCAD shape entitiesSHX = ESRI shapefile (points)SHZ = Ximage fileSI = Mime: text/vnd.wap.siSI = Script Interpretor fileSI = SoftImage imageSIB = Sibelius Music FileSIC = Mime: application/vnd.wap.sicSIC = Quicken 2002 order fileSID = C64 tunes and sound effects file (PlaySID)SID = LizardTech MrSID image files http://www.lizardtech.comSID = Mime: audio/prs.sidSID = Mime: audio/x-psidSIF = Setup Installation FileSIF = Vector data (ISIF format)SIG = gen. Current program settings = SignatureSIG = SIGnature file (ThunderByte AntiVirus/PopMail/PGP)SIGN = Archive fileSigs = (MAC FILE_TYPE) Microsoft Signature FiSIK = Ms Word backup file (SIcherungsKopie)SILK = Same as SLKSILO = MeshTV : Mesh fileSILO = Mime: model/meshSIM = Aurora image formatSIM = Intel VTune performance monitorSIM = SIMPLE script source (Telix)SIMPLE = cygnus share fileSIP = Scoptrax fileSIR = Bitmap image (Solitaire file)SIR = BYU SIR image formatSIRDS = 2d GraphicSIS = Mime: application/vnd.symbian.installSIS = Psion software installation fileSIT = Mime: application/x-sitSIT = Mime: application/x-stuffitSIT = StuffIT Expander archive format, MacintoshSIT! = (MAC CREATOR CODE) Archive created by Stuffit (PC ext: SIT)SIT! = (MAC FILE TYPE) Archive created by Stuffit (PC ext: SIT)SIT5 = (MAC FILE_TYPE) Stuffit 5 ArchiveSITD = (MAC FILE TYPE) Archive created by Stuffit (PC ext: SIT)SITE = Site specific fileSITL = (MAC FILE_TYPE) Stuffit LibrarySITo = (MAC FILE_TYPE) Stuffit TranslatorSITv = (MAC FILE_TYPE) StuffIt ViewerSITx = (MAC FILE_TYPE) StuffIt ExpanderSIX = Bitmap image (DEC LN03+ Sixel file)SIXEL = Bitmap image (DEC LN03+ Sixel file)SIZ = Oracle 7 ConfigurationSIàD = (MAC FILE_TYPE) Infini-DSJ1 = Image SEGA SJ-1 DIGIOSJ_ = Midiprg Superjam compressed fileSJF = Split Files Shell ExtensionSK_ = Audio Utility Koan compressed fileSKA = file of VIRUS ska.exe / happy99.exeSKB = QuickPOS (Point-Of-Sale) Standard Keyboard Layout FileSKC = Mime: chemical/x-mdl-isisSKC = SKCARD SideKick for WindowsSKCard = Same as SKCSKCARD = Starfish SideKick datafileSKD = Autosketch file (Autodesk)SKD = Mime: application/vnd.koanSKD = Mime: application/x-KoanSKD = Mime: application/x-koanSKF = AutoSketch : Drawing file (Autodesk)SKL = Macromedia Director resource fileSKM = Mime: application/vnd.koanSKM = Mime: application/x-KoanSKM = Mime: application/x-koanSKN = FileWrangler/SecurDesk!/ImageForge Graphic Skin,LV, ZipWranglerSKN = Kinupix skin image formatSKP = Mime: application/vnd.koanSKP = Mime: application/x-koanSKP = Mime: application/x-KoanSKR = PGP private (secret) keyringSKT = Mime: application/vnd.koanSKT = Mime: application/x-KoanSKT = Mime: application/x-koanSKW = SKWRITE SideKick Write or Calendar (same extension for both)SKWrite = Same as SKWSKY = Multiplan SYLK spreadsheet fileSKYT = SKYT packer format (music/sound)(Asle / ReDoX)SL = 3d GraphicSL = Mime: application/x-seelogoSL = Mime: text/vnd.wap.slSL = PACT's Save Layout extensionSL = S-Lang language source code fileSLB = Autodesk Autocad Slide LibrarySLB = Symbols library (P-CAD)SLC = Mime: application/vnd.wap.slcSLC = Mime: application/x-salsaSLC = Telix compiled SALT scriptSLD = Autodesk Autocad SlideSLD3 = (MAC FILE TYPE) Power Point 3 (PC ext: PPT)SLD3 = (MAC FILE_TYPE) PowerPoint 3/4 SlideSLD8 = (MAC FILE TYPE) Power Point 98 (PC ext: PPT)SLD8 = (MAC FILE_TYPE) PowerPoint 98 SlideSLDASM = Solidworks FileSLDDRW = Solidworks FileSLDDWG = SolidWorks drawing 2D (Vector graphics)SLDPRT = SolidWorks drawing 3D (Vector graphics)SLDS = (MAC FILE_TYPE) PowerPoint 2 SlideSLF = Ntgraph Setup30 fileSLG = Chromeleon Audit TrailSLI = MAGICorp Slide Service : SlideSLI = Slice : used by some 3d-modellerSLICKEDIT = Bugslayer Tracesrv fileSLIDES = Mime: application/x-showcaseSLK = Excel-Spreadsheet: Data format (Sylk Symbolic Link format)SLK = MultiPlan -Spreadsheet: Data format (Sylk Symbolic Link format)SLK = Timeslips Lock FileSLL = Sound data file (Generic)SLM = Microsoft Visual FoxProSLN = Microsoft Mse fileSLN = MS Visual Studio .Net solution fileslnk = (MAC FILE_TYPE) System CommsSLO = Webalizer.01 Lang fileSLP = Pro/E rendering fileSLP = Timeslips Data FilesLS3 = (MAC FILE_TYPE) Excel 3 TemplatesLS4 = (MAC FILE_TYPE) Excel 4sLS5 = (MAC FILE_TYPE) Excel 5sLS8 = (MAC FILE_TYPE) Excel 98 TemplatSLT = Mime: application/vnd.epson.saltSLT = SelectionSLT = Telix : Salt Script Application Language script sourceSLT = ZX SPECTRUM emulatorSM = Samna Word text documentSM = ScriptMaker scriptSM = Smalltalk language source code fileSM = SoftSpoken Mailer maillistSM$ = Modem Bitware Fax disk2 fileSM2 = Terrasoft summery tableSM3 = DataCAD Symbol FileSM_ = Midiprg Seqmax Seqprest compressed fileSMC = SmartMaster LOTUS Freelance Graphics 9x scene fileSMC = Super Nintendo Game-console ROM Image (See ZNES or SNES9x)SMD = Mime: chemical/x-smdSMD = SmartWare II, version 1.02SMD = StarOffice MailSMD = Video game console ROM emulator fileSMDB = SteamMaker project file. Windows-based authoring tool http://www.learn.comSMF = SMARTFAX : FaxSMF = StarOffice FormulaSMI = CC:Mail Smart IconSMI = Daylight SMILESSMI = LOTUS SmarticonsSMI = Macintosh : "Self-mounting image" : Disk Copy compressed imageSMI = Mime: application/smilSMI = Mime: chemical/x-daylight-smilesSMI = Mime: chemical/x-x-daylight-smilesSMI = RealPlay SMIL File Real Player G2SMI = SMIL multimediaSMIL = "Synchronized Multimedia Integration Language"SMIL = Mime: application/smilSMIL = TextSMILES = SMILES chemical modeller input fileSMK = Image file (Deer's Revenge)SMK = Image file (Nascar Racing '99)SMK = RAD Video Tools : Smacker compressed videoSMM = Ami Pro Macro (2.x,3.x)SMN = ParaGraph's WorkScript format : FontSMN = Samma Word : textSMP = Ad Lib Gold SampleSMP = Mime: application/studiomSMP = Sample Scream Tracker SampleSMP = Samplevision format : SoundSMP = Ulead Photo ExpressSMP = Xionics SMP imageSMS = 8-bit Sega Master System : Emulator ROM image fileSMS = MS Package Definition File (used to be .PDF)SMT = extension used by some CAD programms used for SMT-circuit layoutSMT = HiPer-Six Memo FileSMT = IconAuthor : SmartObject fileSMT = QuickBooksSMT = Smart Ware II : Text fileSMU = Simple Musical ScoreSMV = Saved Mail VideoSMZ = Audio/Video fileSN = serial number fileSN = Sound Club editor : Compressed song fileSN_ = Midiprg Guitarws compressed fileSNA = ZX80 SPECTRUM emulator snapshotSND = AKAI MPC-series sample : SoundSND = Amiga IFF/8SVX SoundSND = Digitized sound file ATARISND = internet sound formatSND = Interplay/MusicStudio soundSND = Mime: audio/basicSND = Mime: audio/x-adpcmSND = NeXT/Sun SoundSND = Raw unsigned PCM data : SoundSND = Resource Fork soundSND = Software Toolworks SoundSND = Sound ClipSND = sound file, similar to AUSND = Sound generic nameSND = Sounder/Soundtools soundSND = Sun/NeXT/Tandy/Apple Macintosh : Sound file, old formatSND = Wired For SoundSNDJ = audio modulSNDR = Sounder sound file : SoundSndS = (MAC FILE_TYPE) Microsoft Sound SetSNDT = Sndtool sound file : SoundSNG = Midisoft Studio - Prism : Song (midi sound)SNG = Song : various prgsSNIFFER = Sniffer trace filesSNM = Netscape Communicator : Mail, News messagesSNO = Snobol4 language source code fileSNOOP = SNOOP capture file formatSNP = Access 97 report SNaPshot fileSNP = CoffeeCup HTML Editor SnippetSNP = ComputerEyes output video AnimationSNP = Microsoft Access : Database fileSNP = READIBM : Book-shelf for .BOOSNP = Shapshot file (Snapview)SNT = Microsoft vissdk Vislocalinfo fileSNT = Tonline Email sent fileSNW = Wired For SoundSNX = QuickBooks; DataSNX = Slide Show ImageSO = Fortran 90 shared objectSO = Shared library file (Unix)(similar to DLL)SO3 = MP3 compressed .sou file =soundSO_ = Midiprg Score Midiprglite compressed fileSOA = Sage MAS 90 Accounting Software FileSoap = (MAC FILE_TYPE) KPT SoapSOB = Visual BasicSOC = Game: Uefa champions league Logic fileSOL = MATRA prelude solidsSOL = Mime: application/solidsSOL = Solution file ,Solution eg. game walkthroughs(Common used with game examples,tutorials)SOM = Paradox : Sort informationSOM = Quattro Pro: network serial numbersSON = Creative Labs SoundBlaster Studio II : Song fileSORT = thoroughbred basic direct / sort fileSOU = Creative Labs SoundBlaster Studio : Sound fileSOU = Lucas Arts sound fileSOU = Sound data (sound tool)SOU = Sound file by games(Indiana JonesSOUP = Message / E-mailSOW = ARJ archivSOX = native Unix Sox raw soundSOX = Schema for object oriented XMLSP = Micrografx ABC Snap GraphicSP = Spice : DataSP = Splint/unix : Compressed file archiveSP = ZX SPECTRUM emulator source profileSP1 = various gamesSP2 = various gamesSP4 = Roller Coaster Tycoon : Saved gameSPA = Flash MovieSPADE = Snort fileSPAR = Spartan chemical modeller input fileSPAR = Spartan chemical modeller output fileSPARC = Sunos4 fileSPC = 2d GraphicSPC = Atari compressed Spectrum file : Bitmap graphicsSPC = Galactic Industries SPC File FormatSPC = Microsoft Multiplan : ProgramSPC = Mime: application/x-pkcs7-certificatesSPC = Mime: chemical/x-galactic-spcSPC = Mime: text/x-speechSPC = music : SNES AudioSPC = SPC format for spectral and chromatographic dataSPC = Text to speechSPC = WordPerfect Temp FileSPD = Adobe printer driverSPD = Harvard Bitstream TypefacesSPD = Postscript printer mini driverSPD = Speach Data file : SoundSPD = Speedo : Scalable FontSPE = Princeton Instruments CCD camera : Bitmap graphics/imageSPEC = Gen. specs fileSPERE = NIST SPHERE sound filesSPF = 2d GraphicSPF = Bitmap image ,spiff = Still Picture Interchange File FormatSPF = EnerGraphics : Slide presentation fileSPF = Setup FileSPF = Site Publisher ProfileSPG = Sprint : GlossarySPH = POV-Ray (old vers.)SPH = SphereSPI = scanned Graphics (Siemens and Philips scanner)SPIFF = Bitmap image , SPIFF = Still Picture Interchange File FormatSPJ = Site Publisher Project FileSPK = Acorn : Compressed file archive (Spark)SPL = Compressed file archive created by SPLINTSPL = Customized printer driver by SprintSPL = Digitrakker Sample (by n-FACTOR)SPL = FutureSplash Animation (Internet Picture)SPL = Macromedia Future Splash Animator : MovieSPL = Mime: application/futuresplashSPL = Mime: application/x-futuresplashSPL = Personal spell dictionarySPL = Sample file (Generic)SPL = Signature : Personal spell dictionarySPL = SoundSPL = Split Files Shell ExtensionSPL = Windows 3.x printing : Spool fileSPM = WordPerfect FileSPMM = Spartan Mol. Mechanics chemical modeller input fileSPN = Spanish readmeSPN = WordPerfect Distribution FileSPO = Mime: text/vnd.in3d.spotSPOT = Mime: text/vnd.in3d.spotSPOT = SPOT satellite image file : Bitmap graphicsSPP = Serif PhotoPlus Native Format FileSPP = Sprint : Printer fileSPPACK = SPPack sound sample : SoundSPR = Document letter PR: SPRINTSPR = Foxpro Generated Screen ProgramSPR = LutinSPR = many - Story Board : Sprite (graphics image)SPR = Mime: application/x-spriteSPR = Psion Series 3 : SpreadsheetSPR = Sizzler : AnimationSPRITE = Acorn : Bitmap fileSPRITE = Mime: application/x-spriteSPRITE = Sizzler : AnimationSPS = 2d GraphicSPS = Image Atari Spectrum 512SPS = Screen driver of SprintSPS = VAX/VMS : SPSS language source code fileSPS = xport .sps by sharkportSPT = Mime: application/x-sptSPT = MITAC disk/system management utility pack : Data support fileSPT = one part of multi-part file : SplitSPT = Spitbol language source code fileSPU = 2d GraphicSPU = Atari compressed Spectrum bitmap imageSPW = ABC Snap Graphics workspace backupSPW = Jandel Sigma Stat/ SigmaPlot WorksheetSPX = Foxpro Compiler Screen ProgramSPX = Screensaver (Screen Peace) (Windows)SPY = Wintech Software Design fileSQB = SyQuest BackupSQC = Structured Query Language (SQL) Common Code FileSQD = 3d GraphicSQD = MiscSQD = Squish : Squish message baseSQF = France98 football game fe fileSQI = Squish : Squish message base indexSQL = Squish : Squish message base last read pointersSQL = Structured Query Language Data SQLSQP = Sonique : Query result of audio searchSQR = Structured Query Language Program File (SQL)SQW = Archive squeezeSQZ = Squeeze : Compressed file archive unix, also msdosSR = Netscape fileSR = Sun Rasterfile : Bitmap graphicsSR_ = Compr. Tvideo card Neu fileSRC = DataFlex/Multi-Edit souceSRC = generally Source code fileSRC = Mime: application/x-wais-sourceSRE = Motorola S-record file (undef)SREC = Motorola S-RecordsSRF = Sun Raster File : Bitmap graphicsSRF = TerraGen SuRFace MAPSRFMAP = TerraGen SuRFace MAPSRG = Microsoft PowerPoint : Self-registration data fileSRM = Video game console ROM emulator fileSRP = QuickLink : ScriptSRQ = MS Server request file; unprocessedSRS = Bitmap: Sun Raster FileSRS = MS Server request file; partially processedSRT = Skymap data fileSRV = Help Maker filesrvr = (MAC FILE_TYPE) Server Connection FilSRZ = DataFlex : Source fileSS = Screen saverSS = Snappy configuration fileSS = Splash : Bitmap graphicsSS2 = Terrasoft SAS program fileSSA = Sub Station Alpha : Video fileSSAGE = inbound internet email message : Microsoft Exchange ServerSSC = SourceSafe (source code control) configurationSSD = Painter4 Script fileSSD = SAS/PC DatafileSSD = Style sheet definition fileSSD01 = Unix : SAS data setsSSF = Enable : Spreadsheet fileSSF = Mime: application/vnd.epson.ssfSSF = Sound set fileSSH = DataFellows : Secure Shell documentSSH = Style Sheet for MS Internet ExplorerSSH2 = SSH Secure Shell ClientSSI = HTML with server side includesSSI = Image SriSunSSI = Installer/GD Software Setup InformationSSI = Mime: text/x-server-parsed-htmlSSIW = (MAC CREATOR CODE) Wordperfect 4 (saved by WP for the Mac) (PC ext: WP4)SSIW = (MAC CREATOR CODE) Wordperfect 5 (saved by WP for the Mac) (PC ext: WP5)SSIW = (MAC CREATOR CODE) Wordperfect 1SSL = Borland Paradox5 fileSSL = Corel Flow Smart LibrarySSL = Sessions ListSSM = Mime: application/streamingmediaSSM = RealAudio Standard Streaming MetafileSSP = Axialis screensaver image formatSSP = SAS Transport : DatafileSSQ = ODBC scriptSSS = Saved Game of Heart Of DarknessSSS = Studio Session Song File FormatSST = Certificate store file MicrosoftSST = IDIDAS, SSTMAP, IMGMAP : Bitmap graphics - Satellite image data AVHRR fileSST = Mime: application/vnd.ms-pki.certstoreSSV = ChartfileSSX = MiscST = NeoPaint Stamp FileST = Disk Image file (Atari)ST = Little Smalltalk language source code fileST = NeoPaint Stamp FileST = Scream Tracker : Instrument libraryST0 = Spice : StatusST1 = Spice : StatusST2 = Spice : StatusST3 = Spice : StatusST4 = Bitmap Santa Barbara Instruments Astronomical ImageST4 = Image Raw grayscale fileST4 = Image SBIG CCD Camera ST-4 / ST-xST4 = Spice : StatusST5 = Bitmap Santa Barbara Instruments Astronomical ImageST5 = SBIG CCD camera ST-x photoST5 = Spice : StatusST6 = Bitmap Santa Barbara Instruments Astronomical ImageST6 = SBIG CCD camera ST-x photoST6 = Spice : StatusST7 = Bitmap Santa Barbara Instruments Astronomical ImageST7 = SBIG CCD camera ST-x photoST7 = Spice : StatusST8 = Bitmap Santa Barbara Instruments Astronomical ImageST8 = SBIG CCD camera ST-x photoST8 = Spice : StatusST9 = SBIG Astronomical ImageST9 = Spice : StatusSTA = diverent games: saved stateSTA = Eudora FileSTA = Reflection 4.0 saved stateSTA = Spinmaker Plus : StackSTA = Statistica : Data fileSTAK = (MAC FILE_TYPE) HyperCard StackSTARPACK = StarTrekker pack format (music/sound) (Asle / ReDoX)STAT = Status fileSTATUS = Gen. Status fileSTB = Genus Stub LibrarySTC = Plug-in Acrobat ExchangeSTC = Terrasoft SAS data fileSTD = LocoScript Standard Script FileSTD = Plug-in Acrobat ExchangeSTD = Prosa : State Transition Diagram graphics fileSTD = SureThing CD Labeler DocumentSTEGANO = Steganographic imageSTEP = ISO-10303 STEP product dataSTEP = Mime: application/stepSTF = ACME Table Files (winword.exe)STF = Microsoft Setup table (many prg.)STF = Mime: application/vnd.wt.stfSTF = ShrinkToFit : Compressed file archiveSTF = Structured FileSTG = PageKeeper Storage FileSTI = ProgrammingSTK = Mime: application/hyperstudioSTK = Personal Stock Monitor FileSTK = Sticker Store StickerSTL = C++ Standard Template LibrarySTL = CAD Software Solid Modeling/Prototyping FileSTL = Claris Works data fileSTL = Micrographics Designer stylesheetSTL = Mime: application/slaSTL = Mime: application/vnd.ms-pki.stlSTL = Mime: application/x-navistyleSTL = Security Certificate trust/request list.STL = STereoLithography 3d objectSTM = PhotoStudio Stamp image formatSTM = Prosa : State Transition Diagram model fileSTM = Scream Tracker II : Music (4 channel)STM = short for .SHTML = HTML with SSISTM = State Transition Diagram model file (Prosa)StMI = (MAC CREATOR CODE) Adobe's PageMillStMI = (MAC CREATOR CODE) GIF files created by PageMill (PC ext: GIF)StMI = (MAC CREATOR CODE) HTML files created by PageMill (PC ext: HTM)StMI = (MAC FILE_TYPE) PageMillSTML = See STM HTMLSTN = ArcView : geocoding standardization fileSTN = Microsoft Flight Simulator FileSTN= = Genuine Fractals STiNg file format (losslesss image codec)STO = Genus Pascal Stub OBJ FileSTOT = (MAC FILE_TYPE) Mac OS Help IndexSTP = 3d GraphicSTP = ISO-10303 STEP product dataSTP = Mime: application/stepSTP = PageKeeper Packed Storage FileSTP = Plug-in Adobe Acrobat Exchange (language)STQ = StatSoft Software : Text file (Statistica)STR = DataPerfect Structure FileSTR = dBASE Application Generator : Structure list object fileSTR = Gate3 table structure fileSTR = Mime: application/vnd.pg.formatSTR = Mime: audio/x-strSTR = Screensaver fileSTR = Stream File Playstation DiscsSTrk = (MAC FILE_TYPE) MOD Music FileSTRN = (MAC FILE_TYPE) HyperCard Stack ConverterSTS = MS C Project Status InfoSTS = Scream Tracker : Song formatSTT = Tacmi Pixia palette filestub = (MAC FILE_TYPE) Mac OS Stub LibrarySTW = Neopaint Stamp image formatSTW = SmartTerm for Windows : Data fileSTX = CA-Simply Tax : Tax formSTX = Santa Barbara Instruments Astronomical Image : Bitmap graphicsSTX = SBIG CCD camera ST-x (Astronomical Image)STX = Scream Tracker Music Interface KitSTX = SmarText : Electronic bookSTX = SPOT Image : Statistics fileSTX = System/User Topic Set Descriptor BullsEyeSTX = Terrasoft SAS data fileSTY = gen. STYle template, library or sheet used by many text and graphics programsSTY = Micrografx Picture Publisher Print StyleSTY = MS Word for DOS Style SheetSTY = Ventura Publisher style sheetSTYLE = Html style fileSUB = Rational Rose component packageSUC = Softrans Hello Engines! 2.1 fileSUD = Symantec Undodata fileSUI = Suit library (Simple User Interface Toolkit)Suit = (MAC FILE_TYPE) MacBench Test SuiteSUL = Gfa Raytrace image/tbvSUM = SUMmarySUMM = Clapack Blas Testing fileSUN = Bitmap image (Sun raster file format), UNIXSUN3 = Possibly modified Sunos4 fileSUN4 = Sun Os 4 fileSUN5 = Sun Os 5 fileSUNIFF = Bitmap image (Sun TAAC Image File Format)SUO = Visual Studio .NET user settingsSUP = Bitmap image (Startup screen)SUP = Error Suppression for Nu-Mega Technologies, Inc. BoundsCheckerSUP = Supplemental data (spelling checker user dictionary)SUP = WordPerfect for Win SUPplementary dictionarySUR = Leben_jesu Bibel fileSUX = audio modulSV = Game: roland garros tennis fileSV2 = Terrasoft SAS file / retrieval informationSV4 = RollerCoaster Tycoon Saved GameSV4CPIO = Mime: application/x-sv4cpioSV4CRC = Mime: application/x-sv4crcSVD = Document autosave file (Ms Word)SVE = WINXP SYSTEM32 fileSVF = Mime: image/vndSVF = Mime: image/vnd.svfSVF = Mime: image/x-dwgSVF = Vector image (Simple Vector Format used by CAD programs)SVG = Mime: image/svg-xmlSVG = Ms Word glossary autosave fileSVG = W3C's XML based vector graphics formatSVH = Mime: image/svhSVH = Picture; Black Diamond Consulting (Surround Video - Animated Internet Picture)SVM = Formula 1 car race 2001 Save fileSVP = SwiftView Command FileSVQ = Music fileSVR = Compressed virtual world for WWWSVR = Mime: application/x-worldSVR = Mime: x-world/x-svrSVR = SuperScape ActiveX Superscape Viscape ControlSVS = Ms Word style sheet autosave fileSVU = Adressmanager Default.dbu fileSVX = Sound (Amiga 8SVX format)SVY = SAVVY/PC : Database fileSW = 16bit) data : Sound (Raw Signed PCM WordSW = Audio file (signed word)SW0 = Spice : Sweep outputSW1 = Spice : Sweep outputSW2 = Spice : Sweep outputSW3 = Spice : Sweep outputSW4 = Spice : Sweep outputSW5 = Spice : Sweep outputSW6 = Spice : Sweep outputSW7 = Spice : Sweep outputSW8 = Spice : Sweep outputSW9 = Spice : Sweep outputSWA = Macromedia Shockwave music (MPEG-1 Layer III with special header)SWB = Photoshop fileSWD = Schoolwide Database filesWDB = (MAC FILE_TYPE) ClarisWorks 3/4 DatabaseSWE = Nhl Ice Hockey 2002 required fileSWECOIN = Swecoin Font Format and PKTSWF = Mime: application/x-shockwave-flashSWF = ShockWave Flash, Animated Vector Format InternetSWF2 = (MAC CREATOR CODE) Flash files (PC ext: SWF)SWFL = (MAC FILE TYPE) Shockwave Flash files (PC ext: SWF)SWFL = Mime: application/x-shockwave-flashSWG = SWAG Pascal Snippets (SWAG Reader)sWGR = (MAC FILE_TYPE) ClarisWorks 3/4 DrawingSWI = files created by Swish (help in making Macromedia Flash files)SWIN = (MAC FILE_TYPE) SoftWindowsSWISH-E = SWISH-E fileSWL = Macromedia Flash Format [Alternate]SWP = Borland Sprint document backupSWP = Win virtual Memory Storage = Swap Fileswpl = (MAC FILE_TYPE) Software Update FilesWSS = (MAC FILE_TYPE) ClarisWorks 3/4 SpreadshtSWT = Visual Basic Setup Wizard Template fileSWV = Windows Sound File FormatsWWP = (MAC FILE_TYPE) ClarisWorks 3/4 DocumentSXP = 3D Studio process fileSXW = OpenOffice.org Writer documentSY# = Darn! Backup FilesSY0 = WordExpress fileSY1 = Smartpix symbol library (Ami Pro)SY3 = Harvard Graphics Symbol 3.xSY_ = Korg Dw8000 compressed fileSYD = Backup file made by QEMM/SysEditSYK = SYLK spreadsheet format (Excel)SYLK = (MAC FILE_TYPE) SYLK SpreadsheetSYLK = SYLK spreadsheet format (Excel)SYM = Borland C++ precompiled headersSYM = Graphics symbols (Harvard Graphics 2.x/Ms Windows SDK)SYM = Lotus Freelance SYMbol librarySYM = P-CAD component symbolsSYM = Program symbol table (many assembler/compilers and linkers)SYM = Symbol (generic name)SYN = Bitmap image (SDSC Synu image file)SYN = Ms Word 5 synonym fileSYN = Synthetic Universe image formatsynC = (MAC FILE_TYPE) ColorSyncSYNU = Bitmap image (SDSC Synu image file)SYNU = Synthetic Universe image formatSYS = Datafile (SYGRAPH/SYSTAT/SPSS/PC)SYS = Mime: video/x-mpeg-systemSYS = System file - device driver or hardware configuration info (DOS)SYS = Windows Bitmap image formatSYS-OLD = cygwin terminfo fileSYSK = cygwin terminfo fileSYW = Graphics symbols (Harvard Graphics Win)SYW = Yamaha SY-85/SY-99 Wave FileSYX = Modula M2sds fileSY~ = Win Coreldraw file
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Viewer for images/pictures: See Multimedia/XnView
Player for sound/music: See Multimedia/2pat20
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