| ptb | Peachtree Accounting Database Backup |
| ptb | ProfiCAD Title Block Data |
| ptc | iPack Patch |
| ptc | NRG Symphonie Patch Data |
| ptd | Polar ProTrainer Team Data |
| ptd | Pro/ENGINEER Exported Table |
| ptdb | Peachtree Accounting Database |
| ptf | PlayStation Portable Theme Data |
| ptf | Pro Tools Session Data |
| ptf | Quanquest Project Translation Data |
| ptf | West LiveNote Portable Transcript Data |
| pth | 4D Path Document |
| pth | LISREL Path Diagram Data |
| pti | IBM e-Config Exported Portfolio Item |
| pti | Punch! Home Design Texture Info |
| ptk | Quicken Online Financial Data |
| ptl | Adobe Premiere Pro Title Data |
| ptl | Corel Paint Shop Pro Tile Preset |
| ptm | Microsoft MapPoint Map |
| ptmf | Huawei PTMF Trace Data |
| ptn | Abbyy FineReader User Pattern |
| ptn | CADKEY Pattern Data |
| ptn | PaperPort Thumbnail Cache |
| ptn2 | PaperPort Thumbnail Cache |
| ptp | Act! Modem Sync Data |
| ptp | Primo Emulator Tape Image |
| ptp | ToolBook Instructor Assistant Book Data |
| ptped | iPed Database Backup |
| ptr | Redatam Pointer Data |
| ptrack | SAM Predict Track Data |
