| ppd | Polar ProTrainer Person Data |
| ppd | ProfiCAD Symbol Data |
| ppf | EdgeCAM Pathtrace Part Data |
| ppf | Micrografx Picture Publisher Image |
| ppf | PPF-O-Matic Patch |
| pphe | PLINK Phenotype Permutations Data |
| ppi | Lifo-Pro Producer Price Index |
| ppk | PuTTY Private Key |
| ppk | Sunnysoft InterWrite Keyboard Definition Data |
| ppl | PTC Creo Route Sheet Data |
| pplx | Osmose O-Calc Pro Database |
| pplz | Polar ProTrainer Training Plan |
| ppm | Insight II Proton Chemical Shifts Data |
| ppmd | ExtractNow PPMD Data |
| ppmx | Scorelib Paged Parameter MatriX Data |
| ppp9 | Microsoft PowerPoint for Mac Wizard |
| ppr | IBM Cognos PowerPlay Report Data |
| 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 |
| ppv | Punch! Home Design Thumbnail Data |
| ppw | Micrografx Picture Publisher Wizard |
| ppws | Enfocus PitStop Workspace Settings Data |
| ppx | IBM Cognos PowerPlay Data |
| ppx | PingPlotter Script |
