| ptf | West LiveNote Portable Transcript Data |
| pth | 4D Path Document |
| ptk | Quicken Online Financial Data |
| ptm | Microsoft MapPoint Map |
| ptmf | Huawei PTMF Trace Data |
| ptn | Abbyy FineReader User Pattern |
| ptn2 | PaperPort Thumbnail Cache |
| ptp | Primo Emulator Tape Image |
| ptped | iPed Database Backup |
| pts | ENVI Ground Control Point File |
| pts | Abbyy FineReader Data |
| ptt | Microsoft MapPoint Template |
| ptu | PicoQuant Time Tagged File |
| ptxml | Windows PerfTrack XML Data |
| ptxt | Avid Pro Tools Session Template |
| pty | IBM Rational Rose Property Set |
| puc | Page Update Checker Data |
| puf | Puffer Encrypted Data |
| pug | PUG Archive |
| pul | PATCHMASTER Pulsed Tree Data |
| pun | Aplitop MDT Points Data |
| puz | Crossword Puzzle Solver Data |
| pv | CONSEL P-Value Data |
| pvb | VirtualBoss PocketPC Data FIle |
| pvdb | PV Elite Database |
| pvf | PageVault/PageRecall File |
| pvg | Microsoft Encarta World Atlas Pushpins |
| pvi | PV Elite Input File |
| pvj | K-Flow ProofVision Job Ticket |
| pvk | Microsoft Software Publisher Private Key |
