| Extension | 描述 | 檔案格式 |
|---|
| s | Source Code File | Developer Files |
| safariextz | Safari Extension File | Misc Files |
| sai | BWA Output File | Misc Files |
| sal | SORITEC Data File | 資料檔 |
| sam | Ami Pro Document File | 文字檔 |
| sat | Standard ACIS Text File | 文字檔 |
| sav | Saved Game File | 遊戲檔案 |
| save | Doom 3 Saved Game File | 遊戲檔案 |
| sb | Creative Compressed Sb16 Sbide File | 系統檔案 |
| sbf | SmartBroker Pro Data File | 資料檔 |
| sbj | Micrografx Clipart or Palette File | 圖檔 |
| scc | Scenarist Closed Caption File | 文字檔 |
| scf | SimTown Effects File | 遊戲檔案 |
| scf | Kai´s Photosoap Image File | 圖檔 |
| scf | Command Shell File | 系統檔案 |
| sch | Schematic Capture Binary File | Developer Files |
| schematic | MCEdit File | 遊戲檔案 |
| scm | ScreenCam Movie File | 視頻檔案 |
| scm | Starcraft Map File | 遊戲檔案 |
| scm | Script-Fu File | Misc Files |
| scn | Pinnacle Studio Scene File | 視頻檔案 |
| script | Desktop DNA Application Script File | Misc Files |
| scs | SimCity Societies Saved Game File | 遊戲檔案 |
| sdb | Windows Compatibility Solution Database file | 系統檔案 |
| sdc | Microsoft Secure Download Cabinet File | 壓縮檔案 |
| sdf | Iconics Symbol Library File | 圖檔 |
| sdi | Single Document Interface | Misc Files |
| sdr | SmartDraw Image File | 圖檔 |
| sds | Chart Application Document File | 文件檔案 |
| se! | ScopEdit Project | Developer Files |
| sed | Self Extraction Directive File | 壓縮檔案 |
| sel | Selection Mask File | Misc Files |
| set | Program Settings File | 設定檔 |
| settings | Microsoft Visual Studio Settings File | Developer Files |
| sev | SevenUp Picture File | 圖檔 |
| sf2 | Creative Labs Soundfont File | 聲音檔案 |
| sfb | HP Soft Font File | Misc Files |
| sfc | System File Checker File | 系統檔案 |
| sfcache | ReadyBoost Cache File | 系統檔案 |
| sfd | Spline Font Database File | 文字檔 |
| sff | Fritz Fax Document File | 文件檔案 |
| sfk | Sony Sound Forge sound file | 聲音檔案 |
| sfl | Soundforge Sound Data File | 聲音檔案 |
| sfo | CuteFTP Search File | 設定檔 |
| sfv | Simple File Verification | 資料檔 |
| sfx | Self Extracting Archive File | 壓縮檔案 |
| sgf | StarOffice Graphical Document File | Misc Files |
| sgm | Standard Generalized Markup Language File | 文件檔案 |
| sh | Bash Shell File | Developer Files |
| sh3d | Sweet Home 3D File | 3D Files |
| sha | CorelDraw Shader File | 圖檔 |
| sha | System Management Server Hierarchy File | 系統檔案 |
| sha | Shell Archive File | 壓縮檔案 |
| shd | Microsoft Windows Shadow File | Misc Files |
| shp | ArcView Shape File | Geographical Files |
| shs | Shell Scrap File | 資料檔 |
| shtml | Server Side Include File | 網頁檔案 |
| shx | Shape Index Format File | Geographical Files |
| sib | Sibelius Score File | Misc Files |
| sid | MrSid Image File | 圖檔 |
| sid | Commodore 64 Music File | 聲音檔案 |
| sif | Setup Installation File | 設定檔 |
| sig | Signature File | 文字檔 |
| sii | Softinterface Conversion Job File | 文字檔 |
| sim | Aurora Image File | 圖檔 |
| sims2pack | Sims 2 Downloaded Package File | 遊戲檔案 |
| sims3pack | Sims3Pack Archived File | 壓縮檔案 |
| sis | Symbian Installation File | Misc Files |
| sisx | Symbian Installation File | Misc Files |
| sit | Stuffit Archive | 壓縮檔案 |
| sitx | Stuffit SITX Compressed File | 壓縮檔案 |
| skb | Google Sketchup Backup File | 3D Files |
| skin | Skin File | Misc Files |
| skm | Google Sketchup Texture File | 3D Files |
| skn | Symbian OS Skin File | Misc Files |
| skp | Sketchup File | 3D Files |
| skudef | C & C Red Alert 3 Modding File | 字型檔案 |
| sldprt | SolidWorks Part File | 3D Files |
| slf | Bitdefender File | Misc Files |
| slf | Symantec Licence File | Misc Files |
| sln | Visual Studio Solution File | Misc Files |
| smc | Super Nintendo ROM Image File | 遊戲檔案 |
| smd | Sega Mega Drive ROM File | 遊戲檔案 |
| smi | Self-Mounting Disk Image | 磁碟映像檔 |
| smil | Synchronized Multimedia Integration Language File | 視頻檔案 |
| sms | Sega Master System ROM File | 遊戲檔案 |
| smt | Samsung Mobile Telephone Theme File | 設定檔 |
| smt | Scrapbook Max Template File | 圖檔 |
| smtmp | Smtmp Virus | 執行檔 |
| smv | Matlab File | Developer Files |
| snp | Microsoft Acess Report Snapshot File | 資料檔 |
| so | Apache Module File | 系統檔案 |
| sol | Flash shared object File | 設定檔 |
| sonyvid | Sony Video File | 視頻檔案 |
| sp2 | Various Games Files | 遊戲檔案 |
| sp3 | Quake 2 32bit Sprite Builder File | 遊戲檔案 |
| spb | SpareBrains File | Misc Files |
| spl | Microsoft Windows Spool File | Misc Files |
| spo | SPSS Data Output File | 資料檔 |
| spr | Half Life Sprite File | 圖檔 |
| spr | Sprint Document File | 文件檔案 |
| sps | IBM SPSS File | 資料檔 |
| spx | Speex File | 聲音檔案 |
| sql | Structured Query Language Data File | 資料檔 |
| sqlite | SQLite Database File | 資料檔 |
| sqm | Service Quality Monitoring File | 系統檔案 |
| squashfs | SquashFS File | 系統檔案 |
| sr0 | SecuROM Analysis File | Misc Files |
| src | Source Code File | Developer Files |
| srf | Sony RAW Image File | 圖檔 |
| srm | Kega Fusion RAM File | 遊戲檔案 |
| srt | Subtitle File | 文字檔 |
| ssa | Sub Station Alpha Subtitle File | 視頻檔案 |
| ssf | Snagit File | 圖檔 |
| st3 | Star3 Karaoke File | 聲音檔案 |
| sta | Adobe Photoshop Match Colour Image Statistics File | 圖檔 |
| stat | Status File | Misc Files |
| steamstart | steamstart | Misc Files |
| step | 1 Step Backup File | 備份檔案 |
| stg | ActiveSync Backup File | 備份檔案 |
| stk | Pivot Stickfigure File | 圖檔 |
| sto | Pro 100 Project File | 3D Files |
| stp | STEP File | 資料檔 |
| stp | Sharepoint Web Site Template File | 網頁檔案 |
| str | dBASE Structure List Object File | 資料檔 |
| strings | Text String File | 文字檔 |
| sty | LaTeX Style File | Layout Files |
| sub | CloneCD Sub channel Data file | 磁碟映像檔 |
| suo | Solution User Options File | Developer Files |
| sur | Topocad Survey Data File | Geographical Files |
| svd | Microsoft Word Autosave File | 備份檔案 |
| svg | Scalable Vector Graphics File Format | 圖檔 |
| svgz | Compressed Scaleable Graphic File | 圖檔 |
| sw2 | Softwrap Licence Control File | 加密檔案 |
| swf | SWF | 網頁檔案 |
| swiad | Optivum Certification File | Misc Files |
| swm | Supportworks ESP Message File | Misc Files |
| sxc | Open Office Spreadsheet File | 試算表檔案 |
| sxc | StarOffice Spreadsheet File | 試算表檔案 |
| sxw | Staroffice Writer Document File | 文字檔 |
| syn | SYN File | Misc Files |
| sys | System File | 系統檔案 |