| sta | Abaqus/CAE Information Summary |
| sta | Adobe Photoshop CS Color Statistics |
| sta | ENVI Statistics 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 |
| startupinfo | E-Prime StartupInfo File |
| stat | EnergyPlus Weather Data Summary Report |
| stat | SAM Training Statistics Data |
| state | Uplay State Data |
| state | Windows Photo Gallery State File |
| states | IconX Preset Data |
| stats | FreeSurfer Statistics File |
| status | uDraw Graph Status Data |
| stb | Autodesk AutoCAD Plot Style Table Data |
| stbom | Catia SmartBOM Data |
| stc | BrainVoyager QX Slice Time Course Data |
| stc | eSignal Stretch Chart Data |
| std | Prosa State Transition Diagram Graphics Data |
| std | STAAD Model Data |
| stdf | SEDana Standard Test Data Format Data |
| stdid | RSA Soft Token Seed |
| stdl | Swift To-Do List Database |
