| ps5 | ProSteel 5 Document |
| psm | Solid Edge Sheet Metal Document |
| psp | Scitor Project Scheduler Planning File |
| psq | Adobe Premiere 6 Storyboard |
| pss | Pocket SlideShow Presentation |
| pss | Pod SnapShot |
| pssd | PhotoSuite Slide Show |
| psu | PSU Designer Document |
| psw | Pocket Word Document |
| psz | Compressed PostScript |
| pt | Plone Page Template |
| pt4 | Adobe Pagemaker 4.0 Template |
| pt5 | Adobe PageMaker 5.0 Template |
| pt6 | Adobe PageMaker 6.0 Template |
| ptb | Power Tab Editor Tabulature |
| ptb | Pro/ENGINEER Pattern Table |
| ptt | Context4 Print Data |
| 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 |
| pubhtml | Microsoft Publisher HTML Document |
| publication | Twixl Publisher Publication |
| pubmhtml | Microsoft Publisher Archived HTML |
| pui | Publish-It Document |
| pve | GoBe Productive Document |
| pvg | Pazzles InVue Document |
| pvgc | Pazzles InVue Compressed Document |
| pvm | HP Photo Album |
| pvn | Design and Print Document |
| pvu | RealVue 3D Packager Document |
| pw | Pathetic Writer Document |
| pwd | DynaCAD v4 Parts Document |