| prt | Corel Presentations Template |
| prt | Solid Edge Parts Document |
| prt | CADKEY Part Document |
| prtl | Adobe Premiere Title Template |
| ps5 | ProSteel 5 Document |
| psm | Solid Edge Sheet Metal Document |
| psp | Scitor Project Scheduler Planning File |
| psq | Adobe Premiere 6 Storyboard |
| pss | Pod SnapShot |
| pss | Pocket SlideShow Presentation |
| pssd | PhotoSuite Slide Show |
| psu | PSU Designer Document |
| psw | Pocket Word Document |
| psz | Compressed PostScript |
| pt | Plone Page Template |
| ptb | Power Tab Editor Tabulature |
| ptb | Pro/ENGINEER Pattern Table |
| ptw | Autodesk AutoCAD Publish to Web File |
| ptx | E-Transcript Document |
| ptz | E-Transcript Bundle |
| pu | PlantUML Document |
| pub | Corel Ventura Publisher Publication |
| pub | Microsoft Publisher Document |
| pubmhtml | Microsoft Publisher Archived HTML |
| pui | Publish-It Document |
| pve | GoBe Productive Document |
| pvm | HP Photo Album |
| pvu | RealVue 3D Packager Document |
| pw | Pathetic Writer Document |
| pwd | DynaCAD v4 Parts Document |
| pwd | Pocket Word Document |
| pwdp | Password Pad Document |
| pwdpl | Password Pad Lite Document |
| pwe | PriMus Exchange Document |
| pwi | Pocket Word Document |
