| ssx | ScreenShare Data |
| ssy | ScreenShare Compressed Data |
| ssz | Spider Player Skin |
| st | StreamTorrent Data |
| st0 | HSPICE Simulation Summary Data |
| st0 | SPICE Status Data |
| st1 | SPICE Status Data |
| st2 | SAS Audit Data |
| st2 | SPICE Status Data |
| st3 | SPICE Status Data |
| st3i | SampleTank 3 Instruments Data |
| st4 | SPICE Status Data |
| st4i | SampleTank 4 Instruments Data |
| st5 | SPICE Status Data |
| st6 | SPICE Status Data |
| st7 | SAS Audit Data |
| st7 | SPICE Status Data |
| st8 | SPICE Status Data |
| st9 | SPICE Status Data |
| sta | Abaqus/CAE Information Summary |
| sta | Adobe Photoshop CS Color Statistics |
| sta | ENVI Statistics Data |
| sta | Esko Plato GRS Station Data |
| sta | Eudora Status Data |
| sta | MAME Saved State Data |
| sta | MicroSim PCBoard Statistics Report |
| sta | Noptel NOS Statistics Data |
| sta | STATISTICA Spreadsheet File |
| staad | STAAD Model Data |
| stad | STAToolkit Data |
| stak | HyperCard Stack Data |
| stam | STAToolkit Metadata |
| stan | Stan Model File |
| stap | STAToolkit STAP Data |
| star | DNASTAR SeqNinja Document |
