| plt | MODTRAN Spectral Output File |
| plt | PTC Creo Plot Data |
| plt | Tecplot 360 Binary Plot Data |
| pltn | Appearance Manager Platinum Theme Data |
| plu | AquaCrop Rainfall Data |
| plu | Portable License Utility Data |
| plu | SensoSCAN 5 Saved Measurements Data |
| plu250 | Portable License Utility Data |
| plux | SensoSCAN 6 Saved Measurements Data |
| plv | XPowder RAW Data |
| plw | PicoLog Data |
| ply | Polygon Model |
| ply | Scanalyze Triangle-mesh Data |
| pm! | Pegasus Mail Address Book |
| pm$ | Pegasus Mail Temporary Data |
| pm1 | Pegasus Mail Folder Secondary Index |
| pm2 | Pegasus Mail UID Information |
| pm5 | SmartCAM Process Model File |
| pm7 | Pegasus Mail Folder State |
| pma | Windows NT Performance Monitor Alert File |
| pmb | Navicat for MariaDB Backup Data |
| pmb | Payroll Mate Backup |
| pmb | Plazmic Media Engine Bundled Data |
| pmc | Windows NT Performance Monitor Chart |
| pmcl | Pinnacle Studio Channel Data |
| pmd | MikuMikuDance PolyMo Model Data |
| pmd | Payroll Mate Database File |
| pmd | Poser Morph Target |
| pmdl | Snowboy Personal Model Data |
| pme | Plazmic Media Engine Data |
| pmh | Pegasus Mail Phonemic Homonym Dictionary |
| pmi | Pegasus Mail Folder Index |
| pmj | 3D Scanner Output |
| pmjx | 3D Scanner Output |
| pml | Windows NT Performance Monitor Log |