| pck | Microsoft SMS Package |
| pcomp | Polycomp Compressed Data |
| pcv | MozBackup Profile Backup |
| pdv | Privacy Drive Volume |
| pe3 | PhotoImpact 3 Image Archive |
| pea | PeaZip Archive |
| pet | Puppy Linux Install Package |
| pf | StuffIt Private File |
| pima | Adobe Application Manager Package |
| pimx | Adobe Creative Cloud Extension |
| pit | PackIt Compressed Archive |
| pk3 | Quake 3 Engine Data File |
| pkg | Microsoft SMS Distribution Manager Package |
| pkg | Mac OS X Installer Package |
| pkg | Sony Playstation 3 Package |
| pkv | Steam Package Data |
| plat | Platinum Web Package |
| pmom | Mindomo Desktop Packed Map |
| pnh | Adobe Project ROME Plug-in Archive |
| ppkg | Windows ICD Provisioning Package |
| prpkg | Preactor Package |
| prpkg | Adobe Presenter Package |
| psarc | Sony PlayStation 3 Game Archive |
| psb | Navicat Backup File |
| psc | Navicat Compressed Backup File |
| put | Microfox PUT Compressed Archive |
| puz | Microsoft Publisher Packed Document |
| pv | PV Elite Archive |
| pwv | SSE Password Vault Archive |
| pwzip | Polyworks Compressed Archive |
| pzip | WinZip Mac Archive |
| qdz | Altera Quartus II Device Package |
| qfc | QFC Archive |
| qic | Windows 95/98/ME Backup |
| qpk | QNX Package File |