| papers | Corel Painter Paper Texture |
| par | Mail.dat Postage Adjustment File |
| param | CASTEP Parameters Data |
| parca | RealityCharting Packaged Chart |
| part2 | NetObjects Fusion Internal System Data |
| part3 | NetObjects Fusion Internal System Data |
| part4 | NetObjects Fusion Internal System Data |
| part5 | NetObjects Fusion Internal System Data |
| pass | Xcode Wallet Data |
| paw | Pawaa File |
| pay | z-Tree Payment File |
| paz | Project A.R.S.E Brain Data |
| pb1 | UltraEdit Popup Data |
| pbf | Picasa Button File |
| pbin | polarization NAVIGATOR Binary Data |
| pbn | Portable Bridge Notation Database |
| pbo | Samsung A900 Phone Book Object |
| pbp | Sony PSP Firmware Update Image |
| pbq | PunkBuster Query Script |
| pbz | Picasa Button Zipfile |
| pc5 | RSLogix 5 Internal Data |
| pcap | Libpcap Captured Packets |
| pcapng | PCAP Next Generation Dump Data |
| pcast | iTunes Podcast File |
| pcb | SmartCAM Custom Control Panel File |
| pcb3dlib | Altium Designer PCB 3D Model |
| pcbdoc | Altium PCB Document |
| pcblib | Protel PCB 3.0 Binary Library |
| pcc | PCCharge Log File |
| pcd | Microsoft Visual Test File |
| pce | TurboGrafx-16/PC Engine Data |
| pce | Gerber PCE Data |
| pcf | Calyx Point Point Data |
| pcf | Cisco VPN Client Profile Configuration |
| pcfs | Calyx Point Compressed Point Data |
