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| Extension | File Type Developer | File Category | File Type Description | Primary Software | Primary Software Developer |
|---|---|---|---|---|---|
| .P01 | HERE | Compressed Files | HERE Maps For Android Map Data Package | HERE Maps | HERE |
| .P06 | Bentley Systems | Compressed Files | MicroStation Modification Project Resource File | MicroStation | Bentley Systems |
| .PACKAGE | Electronic Arts | Compressed Files | Electronic Arts Game Package File | Electronic Arts The Sims 2 | Electronic Arts |
| .PAE | ConeXware | Compressed Files | PowerArchiver Encrypted Archive | PowerArchiver | ConeXware |
| .PAK | Unknown Developer | Compressed Files | Video Game Package | Dragon UnPACKer | Open Source |
| .PAQ6 | Open Source | Compressed Files | PAQ6 Data Archive | KGB Archiver | Open Source |
| .PAQ7 | Open Source | Compressed Files | PAQ7 Data Archive | PeaZip | Open Source |
| .PAQ8 | Open Source | Compressed Files | PAQ8 Data Archive | PAQ8 | Open Source |
| .PAQ8P | PAQ8P | Compressed Files | PAQ8L Data Archive | PAQ8 | Open Source |
| .PAR | Siemens PLM Software | Compressed Files | Solid Edge Part File | Adobe Acrobat DC | Adobe Systems Incorporated |
| .PAR2 | Open Source | Compressed Files | Parchive 2 Index File | QuickPar | Open Source |
| .PART1 | NetObjects | Compressed Files | NetObjects Fusion System Data | NetObjects Fusion | NetObjects |
| .PAX | Portable Operating System Interface (POSIX) Consortium | Compressed Files | PAX Archive | 7-Zip | Igor Pavlov |
| .PBI | The FreeBSD Community | Compressed Files | PC BSD Installer Package | FreeBSD | The FreeBSD Community |
| .PBK | Microsoft Corporation | Compressed Files | Dial-Up Phone Book File | Microsoft Windows | Microsoft Corporation |
| .PCV | Mozilla | Compressed Files | MozBackup Profile Backup | Corel WinZip 21 | Corel |
| .PEA | Open Source | Compressed Files | PEA File Archive | PeaZip | Open Source |
| .PET | Larry Short, Mick Amadio and Puppy community | Compressed Files | Puppy Linux Install Package | 7-Zip | Igor Pavlov |
| .PF | Smith Micro Software | Compressed Files | Private File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .PGZ | Open Source | Compressed Files | StreamLync Ownload Archives | ZipZag | Open Source |
| .PIM | Avid Technology | Compressed Files | Pro Tools Controller Plug-in Mappings File | Avid Pro Tools | Avid Technology |
| .PIT | Samsung Electronics | Compressed Files | Samsung Phone Firmware File | Google Android | |
| .PIZ | Winrar | Compressed Files | Zipped File | 7-Zip | Igor Pavlov |
| .PKD | Power Karaoke | Compressed Files | Power Karaoke Project | Power Karaoke | Power Karaoke |
| .PKG | Apple | Compressed Files | Apple MacOS Installer Package | macOS | Apple |
| .PKV | Valve | Compressed Files | Steam Package Data | Steam | Valve |
| .PKZ | Piboso | Compressed Files | Kart Racing Pro Track Data | Kart Racing Pro | Piboso |
| .PMA | David Harris | Compressed Files | Pegasus Mail Data Archive File | Pegasus Mail | David Harris |
| .PPC | Garmin | Compressed Files | XMap Flight Plan Statistic File | XMap | Garmin |
| .PSZ | Igor Pavlov | Compressed Files | Compressed PostScript File | WinZip | Corel |
| .PUP | Sony | Compressed Files | PlayStation 3 Update File | PS3 PUP Extractor | Interscape |
| .PUT | Micro Fox Software | Compressed Files | PUT Compressed Data | Unknown Software | Unknown Developer |
| .PUZ | Literate Software | Compressed Files | Across Lite Crossword Puzzle | Across Lite | Literate Software |
| .PZ | XnSoft | Compressed Files | Compressed PNG Image | XnView MP | XnSoft |
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