| pphe | PLINK Phenotype Permutations Data |
| ppi | Lifo-Pro Producer Price Index |
| ppk | Sunnysoft InterWrite Keyboard Definition Data |
| ppk | PuTTY Private Key |
| ppl | PTC Creo Route Sheet Data |
| pplx | Osmose O-Calc Pro Database |
| pplz | Polar ProTrainer Training Plan |
| ppmd | ExtractNow PPMD Data |
| ppmx | Scorelib Paged Parameter MatriX Data |
| ppp9 | Microsoft PowerPoint for Mac Wizard |
| ppronote | PowerPro Note Data |
| pprot | NxSeq Long Mate Pair Library Kit Saved Parameters |
| ppsenx | Egis Encrypted Powerpoint PPS Document |
| ppsmenx | Egis Encrypted Powerpoint PPSM Slideshow |
| ppsxenx | Egis Encrypted Powerpoint PPSX Slideshow |
| pptenx | Egis Encrypted Powerpoint PPT Document |
| pptmenx | Egis Encrypted Powerpoint PPTM Document |
| pptxenx | Egis Encrypted Powerpoint PPTX Document |
| ppw | Micrografx Picture Publisher Wizard |
| ppws | Enfocus PitStop Workspace Settings Data |
| ppx | PingPlotter Script |
| ppz | Poser Compressed Props Data |
| ppz9 | Microsoft PowerPoint for Mac Wizard |
| pqb | Pleco Chinese Dictionary Database |
| pqb-backup | Pleco Chinese Dictionary Database Backup |
| pqc | Komori PCC Print Profile |
| pqe | Ontrack EasyRecovery Recovered Data |
| pqf | Corel Presentations Slideshow Runtime |
| pqi | PhreeqcI Data |
| pqo | PhreeqcI Data |