| slb | PSpice Symbols Library |
| slc | SLiCe Format Data |
| sldasm | SolidWorks Assembly Document |
| sldblk | SolidWorks Blocks File |
| sldbombt | SolidWorks BOM Template |
| sldclr | SolidWorks Color Palette Data |
| sldd | Simulink Data Dictionary |
| slddc | Simulink Data Dictionary Cache |
| sldedb | SolidWorks Database |
| sldftp | SolidWorks Form Tool File |
| sldgtolfvt | SolidWorks Geometric Tolerance Style |
| sldholtbt | SolidWorks Hole Table Template |
| sldlfp | SolidWorks Library Features File |
| sldmat | SolidWorks Material Database |
| sldprt | SolidWorks Part Document |
| sldrevtbt | SolidWorks Revision Table Template |
| sldsffvt | SolidWorks Surface Finish Style |
| sldstd | SolidWorks Drafting Standards Data |
| sldweldfvt | SolidWorks Weld Style |
| sldwldtbt | SolidWorks Weldment Cutlist Template |
| slef | Spectral Library Exchange Format Data |
| slg | Lowrance Sonar Log File |
| slg | Autodesk AutoCAD Status Log |
| slg | Symantec Endpoint Protection Database Log |
| sli | ENVI Spectral Library Data |
| sli | EOS PSW SLI Data |
| slib | LightTools SLIB Data |
| slj | Semagic Live Journal Client Data |
| slk | Symbolic Link Spreadsheet |
| slmx | Simulink Model Requirements Links Data |