| slp | Sage Timeslips Data |
| slr | SWAT Solar Radiation Data |
| slreqx | Simulink Requirements Data |
| sls | Bitdefender SLS Data |
| slst | On Schedule Data |
| slt | DB/TextWorks Slot Log File |
| slt | Gallery Lock Hidden Thumbnail Data |
| slt | ZX Spectrum Emulator SLT Snapshot |
| sltx | Simulink Model Template |
| slu | Business Integrator Upgrade License Data |
| slw | Settler LITE Data File |
| slw | SleepScan Analysis Offset Index |
| slx | MATLAB Model |
| slx | Simulink Model Data |
| slxc | Simulink Model Cache Data |
| slxp | MATLAB Protected Model |
| sm | ScriptMaker Script |
| sm | Space Engine Mesh Data |
| sm+ | DataCAD Plus Symbol Data |
| sm2 | RHK Technology Proprietary Format Data |
| sm2 | SAS Multi-dimensional Database |
| sm2 | SediMeter Field Data |
| sm3 | DataCAD Symbol File |
| sm3 | LogDator Measurement Data |
| sm3 | RHK Technology Proprietary Format Data |
| sm3 | SediMeter Field Data |
| sm3 | SediMeter Network Definition Data |
| sm4 | LogDator Measurement Data |
| sm4 | RHK Technology Proprietary Format Data |
| sm4 | SediMeter Field Data |
| sm4 | SediMeter Network Definition Data |
| sm4 | XPMPro 2.0 Data |
| sm5 | SediMeter Field Data |
| sm7 | SAS Multi-dimensional Database |
| sma | Scrapbook Factory Album |
