| 1. | .pl | Perl script language source code file ◊ Palette (Harvard Graphics) ◊ Prolog language source code file ◊ Property List font metric file (TeX) |
| 2. | .pl1 | Room plan (3D Home Architect) |
| 3. | .pl3 | Chart palette (Harvard Graphics 3.0) |
| 4. | .plasma | Plasma fractal image |
| 5. | .plb | Library (FoxPro - P-CAD) |
| 6. | .plc | Add-in file (functions - macros - applications) (Lotus 1-2-3) ◊ Database (P-CAD) |
| 7. | .plg | Build log (Microsoft Developer Studio) |
| 8. | .pli | Data description file (Oracle 7) |
| 9. | .pll | Prelinked library (CA Clipper) |
| 10. | .plm | Module (DisorderTracker2) |