| p7e | File Encryptor Encrypted Data |
| p7f | digiSeal Reader P7F Data |
| p7m | PKCS #7 Encrypted Message |
| p7mkey | KeePass Certificate-protected Key |
| p7r | PKCS #7 Certificate Request Response File |
| p7s | PKCS #7 Digital Signature |
| p7x | Windows SDK Packed Digital Signature |
| p7z | PKCS #7 Compressed Message |
| p8 | PICO-8 Data |
| p83 | GAEB DA 2000 Data File |
| p96 | Win96 Database |
| p97 | Win97 Database |
| p99 | MicroStation Modification Project Resource File |
| pa2 | CME SPAN Expanded Format Data |
| pa2m | SAM PA2M Alignment Data |
| pa4 | Vector NTI Protein Archive |
| paa | Personal Ancestral File Data |
| pab | Microsoft Outlook Personal Address Book |
| pack | CustoPack Tools Theme Pack |
| pad | Act! Database Pointer |
| pad | Portable Application Description |
| pad | Top Secret Crypto Gold One Time Pad Data |
| pad | Visual Expert Application Layout Data |
| padl | Cakewalk Pyro Audio Creator Disk Layout |
| paf | Personal Ancestral File Data |
| pafsc | Esko LinkEdge Package |
| pag | ActivePerl Pro Studio Hash Database |
| pag | CX-Supervisor Page Data |
| pag | Esko FastImpose Page Data |
| pag | Eze EMS Page Data |
