| plist | QuickTime Preferences File |
| plrc | SWI-Prolog Personal Initialisation Data |
| pls | PicoLog Settings |
| pltcfg | Bentley MicroStation Printer Driver Configuration |
| pnca | ProNest Configuration Archive |
| pnd | Pegasus Mail Mailbox Configuration Data |
| pnp | Pegasus Mail POP3 Filter Rules |
| poc | Codesoft Printer Object Configuration |
| pox | Autoslew Configuration |
| ppg | Programmer's Notepad Workspace |
| ppr | PTC Creo PPRINT Settings Table |
| pptp | PPTP Client Options Data |
| pq | Picturesque Settings |
| pra | Windows Media 9 Plug-in Profile |
| pref | Configuration File |
| prefs | Configuration File |
| preset | Flare Graphic Effect Preset |
| prexport | Adobe Premiere Pro Exported Settings Data |
| prf | Xilinx CORE Generator Preferences |
| prf2 | Nord Modular G2 Performance Data |
| prfpset | Adobe Premiere Pro Effect Preset |
| product | Eclipse IDE Product Settings |
| profile | Bash Shell Profile |
| profimail | ProfiMail Settings |
| propdesc | Windows Search Property Description |
| prov | Nokia Java S40 Phone Boot Settings Data |
| prst | Adobe InDesign Print Settings |
| prx | Windows Media Encoder Settings |
| psproj | PostSharp Project Configuration |
| pssc | Windows PowerShell Session Configuration |
| pvs | Parallels Desktop Configuration File |
| pvx | ParaView XML Configuration |
| pw5 | PlanetPress Workflow Configuration |
| pw6 | PlanetPress Workflow Configuration |
| pw7 | PlanetPress Workflow Configuration |