| shl | Inno Setup String Tables File |
| shlibs | Debian Package Shared Library Information |
| shm | Corel WordPerfect Shell Macro Library |
| Siebel Server Shared Memory File |
| sho | Show Pro Software Show Document |
| show | Thinkfree Office NEO Show Document |
| shp | Autodesk AutoCAD Shapefile |
| Broderbund PrintMaster Shape Library |
| CARE-S InfoWorks Pipe Cross-section Data |
| Clarion for Windows Ship List |
| shphst | OnScale Shape History Data |
| shsh | iOS ECID SHSH Data |
| shsh2 | iOS SHSH Blob |
| sht | SigmaNEST Sheet Data |
| WaveStar Datasheet |
| shu | SnippetHub Export |
| shw | MagicQ Show Data |
| shx | Autodesk AutoCAD Compiled Shapefile |
| si2 | SAS Index |
| si3 | ChessDB Index Data |
| si4 | Scid Database Index |
| si7 | SAS Index |
| sia | SIA Metadata |
| Spin It Again Track Data |
| siard | SIARD Database Archive |
| sic | Intuit Quicken Order Data |
| Sick Submitter Data File |
| sid | Microsoft SMS Software Inventory Data |
| OpenOffice.org Slot ID Data |
| Steam Game Backup Data |
| sidb | iTunes Authorization Data File |
| sidd | iTunes Authorization Data File |
| sidecar | Blackmagic RAW Video Sidecar Data |
| sidn | iTunes Authorization Data File |
| sie | SIE Data |
| sif | Andor SIF Data |
| Cytoscape Simple Interaction Format File |
| ElmerSolver Command File |
| KilnView Log Signature |
| siff | Scene Interchange File Format Data |
| sig | Crestron Test Manager Signal Data |
| Esko Automation Engine Signature Data |
| Microsoft OneNote Signature Data |
| Powersim Studio Simulation Game |
| sign | GNU Privacy Guard Signature Data |
| signature | e-Filing Signature Data |
| signed | BlackBerry 10 App Certificate |
| sik | Microsoft Word Backup Data |
| silk | Microsoft Excel Symbolic Link |
| Symbolic Link Spreadsheet |
| silo | MeshTV Data |
| VisIt Hydrodynamical Numerical Simulation Data |
| sim | Autodesk Land Desktop Storage Indication Method Data |
| CARE-S InfoWorks Simulation Parameters Data |
| CyberLink PowerDVD SIM Data |
| ESI ITI SimulationX Model |
| Intel VTune Performance Monitor Simulation Data |
| LogikSim Simulation Data |
| Simile Model |
| Stagecast Creator Simulation Data |
| Steam Game Backup Metadata |
| simfreq | PLINK Simulation Parameter Data |
| simmodel | Altium Designer Simulation Model |
| simodel | Altium Designer Signal Integrity Model |
| sin | WRAP SALT Input Data |
| Xperia X10 Phone SIN Firmware |
| sip | Powersim Studio Model |
| siq | Tektronics RSA306 IQ Streaming Data |
| siqd | Tektronics RSA306 SIQ Data |
| siqh | Tektronics RSA306 SIQ Header |
| sir | Powersim Studio Simulation Run File |
| sis | arivis ImageCore Data |
| Sisma Database |
| Steam Game Backup Info |
| sit | Epson Projector Basic Scenario Data |
| PTC Creo Site Parameter Data |
| site | Sitescooper Sites Data |
| sitf | Seanau Icon Toolkit Data |
| sitl | StuffIt Library Data |
| sito | Stuffit Translator Data |
