| .PDFIG | PDF Colony Software | Arquivos de dados | PDF Index Generator Project File | PDF Index Generator | PDF Colony Software |
| .PDK | Open Source | Arquivos de dados | PC Desktop Cleaner Configuration | PC Desktop Cleaner | Open Source |
| .PDO | Tama Soft | Arquivos de dados | Pepakura Designer File | Pepakura Designer | Tama Soft |
| .PDRPROJ | CyberLink | Arquivos de dados | PowerDirector Mobile Project | Cyberlink PowerDirector Mobile | CyberLink |
| .PDS | CyberLink | Arquivos de dados | PowerDirector Script File | PowerDirector | CyberLink |
| .PDT | Microsoft Corporation | Arquivos de dados | InkWriter Note Taker Template File | Windows Mobile | Microsoft Corporation |
| .PDW | AcaClone | Arquivos de dados | pDRAW32 DNA File | pDRAW32 DNA analysis | AcaClone |
| .PDX | Adobe Systems Incorporated | Arquivos de dados | Adobe Acrobat Index File | Adobe Acrobat DC | Adobe Systems Incorporated |
| .PDXL | Active Sensing, Inc. | Arquivos de dados | PDXpert PLM Data File | PDXpert PLM Software | Active Sensing, Inc. |
| .PE | Microsoft Corporation | Arquivos de dados | Portable Executable File | Microsoft Windows | Microsoft Corporation |
| .PEAK | Adobe Systems Incorporated | Arquivos de dados | Adobe Soundbooth Peak Data | Adobe Soundbooth | Adobe Systems Incorporated |
| .PEC | Brother International Corporation | Arquivos de dados | Brother Embroidery File | BALARAD Embird Studio | Embird Embroidery Software Suite |
| .PED | Corel | Arquivos de dados | Corel WordPerfect Deleted Item Data | Corel WordPerfect | Corel |
| .PEH | YesGoal LLC | Arquivos de dados | Power Email Harvester File | Power Email Harvester | YesGoal LLC |
| .PEPSI | Apple | Arquivos de dados | Golden Orchard Apple II CD Rom File | Apple OS X | Apple |
| .PES | Brother International Corporation | Arquivos de dados | Brother Embroidery Format | Embroidermodder 2 | Open Source |
| .PET | Larry Short, Mick Amadio and Puppy community | Arquivos de dados | Puppy Linux Install Package | 7-Zip | Igor Pavlov |
| .PEW | IAR Systems | Arquivos de dados | IAR Embedded Workbench Data File | IAR Embedded Workbench | IAR Systems |
| .PEX | Schlumberger Limited | Arquivos de dados | Merak Peep Data File | Merak Peep | Schlumberger Limited |
| .PEZ | Prezi | Arquivos de dados | Prezi Desktop Presentation | Prezi Desktop | Prezi |
| .PF | Smith Micro Software | Arquivos de dados | Private File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .PFC | AOL | Arquivos de dados | AOL Personal File Cabinet | AOL | AOL |
| .PFG | jEEPersDX | Arquivos de dados | jEEPers Program Configuration File | jEEPers | Unknown Developer |
| .PFL | PlotSoft | Arquivos de dados | PDFill Project File | PlotSoft PDFill | PlotSoft |
| .PFW | Symantec Corporation | Arquivos de dados | Symantec LiveAdvisor Data | LiveAdvisor | Symantec Corporation |
| .PG | Unknown Developer | Arquivos de dados | PrintFox / PageFox Image File | XnView MP | XnSoft |
| .PG2 | Apple | Arquivos de dados | Golden Orchard Apple II CD Rom File | Apple OS X | Apple |
| .PG3 | Apple | Arquivos de dados | Golden Orchard Apple II CD Rom File | Apple OS X | Apple |
| .PGA | Just Great Software | Arquivos de dados | PowerGREP Action File | PowerGREP | Just Great Software |
| .PGDATA | Penguin George | Arquivos de dados | Penguin George Data File | Penguin George URL Melter | Penguin George |
| .PGL | Hewlett-Packard | Arquivos de dados | HP Plotter Language File Format | Unknown Software | Unknown Developer |
| .PGS | Grasshopper LLC | Arquivos de dados | PageStream Document | PageStream | Grasshopper LLC |
| .PGU | Microsoft Corporation | Arquivos de dados | PowerGREP File | PowerGREP | Just Great Software |
| .PHA | Parametric Technology Corporation | Arquivos de dados | PTC Creo Data File | Pro/ENGINEER | PTC |
| .PHB | Motorola | Arquivos de dados | Motorola Phone Book File | Motorola Phone Tools | Avanquest Software |
| .PHD | CyberLink | Arquivos de dados | PhotoDirector Project File | PhotoDirector | CyberLink |
| .PHL | Amazon | Arquivos de dados | Kindle Popular Highlights File | Microsoft Notepad | Microsoft Corporation |
| .PHP | Panic | Arquivos de dados | PHP Source Code File | Microsoft Notepad | Microsoft Corporation |
| .PHR | Adobe Systems Incorporated | Arquivos de dados | RoboHelp Phrase List | Adobe RoboHelp | Adobe Systems Incorporated |
| .PHS | Open Source | Arquivos de dados | XtalView Phase File | XtalView | Open Source |
| .PH_ | Unknown Developer | Arquivos de dados | C Poet Compressed Disk1 File | Unknown Software | Unknown Developer |
| .PI | 10101 Software | Arquivos de dados | Pi Calculation Data File | iPi Software | 10101 Software |
| .PIA | PanaVue Inc. | Arquivos de dados | PanaVue ImageAssembler Project | PanaVue ImageAssembler | PanaVue Inc. |
| .PIB | Applied Programming Technology | Arquivos de dados | Platform Independent Binary | PibTool | Applied Programming Technology |
| .PII | Apple | Arquivos de dados | Golden Orchard Apple II CD Rom File | Apple OS X | Apple |
| .PIL | M Dialysis AB | Arquivos de dados | CMA Microdialysis Trend Data | LABpilot | M Dialysis AB |
| .PILE | Piletest.com Limited | Arquivos de dados | CHUM Test Results | CHUM | Piletest.com Limited |
| .PIQ | Queensgate Systems | Arquivos de dados | Piped Technology Information Query | Piped | Queensgate Systems |
| .PIQT | Apple | Arquivos de dados | Apple QuickTime Still File | Apple QuickTime Player | Apple |
| .PIV | Peter Bone | Arquivos de dados | Pivot Stickfigure Animation | Pivot Animator (Pivot Stickfigure Animator) | Peter Bone |
| .PIZ | Winrar | Arquivos de dados | Zipped File | 7-Zip | Igor Pavlov |
| .PJD | Extensis | Arquivos de dados | Portfolio Exported Categories File | Portfolio | Extensis |
| .PJF | Flagship Software Ltd. | Arquivos de dados | iAddress Postal Job File | iAddress | Flagship Software Ltd. |
| .PJL | Thomson Reuters Corporation | Arquivos de dados | ProCite Term Lists And Journal Title Lists | ProCite | Thomson Reuters Corporation |
| .PJT | Golden Software LLC | Arquivos de dados | Didger Project File | Golden Software Didger | Golden Software LLC |
| .PJW | IDEC Corporation | Arquivos de dados | WindLDR 6 Project Settings | WindLDR | IDEC Corporation |
| .PKA | Cisco Systems | Arquivos de dados | Packet Tracer Activity File | Packet Tracer | Cisco Systems |
| .PKG | Apple | Arquivos de dados | Apple MacOS Installer Package | macOS | Apple |
| .PKN | Microsoft Corporation | Arquivos de dados | Systems Management Server (SMS) Package Creation Notification | Microsoft Systems Management Server | Microsoft Corporation |
| .PKS | Oracle Corporation | Arquivos de dados | Oracle Package Spec File | Microsoft Notepad | Microsoft Corporation |
| .PKT | Cisco Systems | Arquivos de dados | Packet Tracer Network Simulation Model | Packet Tracer | Cisco Systems |
| .PKW | Vero Software | Arquivos de dados | Cabnetware File | Cabnetware | Vero Software |
| .PKX | IBM | Arquivos de dados | Rational XDE Data | Rational Rose | IBM |
| .PL3 | Harvard Graphics | Arquivos de dados | Harvard Graphics Chart Palette | Harvard Graphics ChartXL | Harvard Graphics |
| .PLAN | KDE | Arquivos de dados | Calligra Plan Document | Calligra Suite | KDE |
| .PLAYSOUND | Apple | Arquivos de dados | Golden Orchard Apple II CD Rom File | Apple OS X | Apple |
| .PLB | Microsoft Corporation | Arquivos de dados | Microsoft Robotics Developer Studio Playback Data | Microsoft Robotics Developer Studio | Microsoft Corporation |
| .PLC | Sunbelt | Arquivos de dados | PL/B Source File | Sunbelt Visual PL/B | Sunbelt |
| .PLG | Microsoft Corporation | Arquivos de dados | Visual Studio Build Log File | Microsoft Visual Studio | Microsoft Corporation |
| .PLK | Advanced Micro Devices, Inc. | Arquivos de dados | AMD ATI Radeon Video Driver | ATI Multimedia Center | Advanced Micro Devices, Inc. |
| .PLN | Microsoft Corporation | Arquivos de dados | Flight Simulator Flight Plan | Microsoft Flight Simulator | Microsoft Corporation |
| .PLOTTER | Apple | Arquivos de dados | Golden Orchard Apple II CD Rom File | Apple OS X | Apple |
| .PLS | Various Developers | Arquivos de dados | Audio Playlist | VLC Media Player | VideoLAN |
| .PLT | Tecplot, Inc | Arquivos de dados | Tecplot Binary Data File | Tecplot 360 | Tecplot, Inc |
| .PLUS | Apple | Arquivos de dados | Golden Orchard Apple II CD Rom File | Apple OS X | Apple |
| .PLV | Magix Software GmbH | Arquivos de dados | Digital Foto Maker Data | MAGIX Digital Foto Maker | Magix Software GmbH |
| .PLW | Hex-Rays | Arquivos de dados | 32-bit Windows IDA Plugin Module | Hex-Rays IDA | Hex-Rays |
| .PM0 | David Harris | Arquivos de dados | Pegasus Mail Data | Pegasus Mail | David Harris |
| .PM2 | David Harris | Arquivos de dados | Pegasus Mail UID Information | Pegasus Mail | David Harris |
| .PM3 | Crouzet | Arquivos de dados | Crouzet Logic Software M3 File | Crouzet M3 Soft | Crouzet |
| .PM7 | Adobe Systems Incorporated | Arquivos de dados | Adobe PageMaker 7 Document | Adobe PageMaker | Adobe Systems Incorporated |
| .PMA | David Harris | Arquivos de dados | Pegasus Mail Data Archive File | Pegasus Mail | David Harris |
| .PMAP | JKRB Software | Arquivos de dados | Pocket Mindmap Mindmap File | Pocket Mindmap | JKRB Software |
| .PMC | David Harris | Arquivos de dados | Pegasus Mail Filter Rule Files | Pegasus Mail | David Harris |
| .PME | BlackBerry | Arquivos de dados | Plazmic Media Engine File | Plazmic CDM | BlackBerry |
| .PMH | David Harris | Arquivos de dados | Pegasus Mail Phonemic Homonym Dictionary | Pegasus Mail | David Harris |
| .PMK | David Harris | Arquivos de dados | Pegasus Mail Keyboard Settings | Pegasus Mail | David Harris |
| .PML | Microsoft Corporation | Arquivos de dados | Process Monitor Log File | Process Monitor | Microsoft Corporation |
| .PMM | Yu Higuchi | Arquivos de dados | MikuMikuDance PolygonMovieMaker File | MikuMikuDance | Yu Higuchi |
| .PMO | Broderbund | Arquivos de dados | Print Meta Object File | Broderbund PrintMaster v7 Platinum | Broderbund |
| .PMP | Autodesk, Inc. | Arquivos de dados | AutoCAD Plot Model Parameter File | Autodesk AutoCAD | Autodesk, Inc. |
| .PMR | Avid Technology | Arquivos de dados | Avid Persisent Media Record File | Avid Media Composer | Avid Technology |
| .PMS | David Harris | Arquivos de dados | Pegasus Mail Data | Pegasus Mail | David Harris |
| .PMT | Adobe Systems Incorporated | Arquivos de dados | PageMaker Template File | Adobe InDesign | Adobe Systems Incorporated |
| .PMU | David Harris | Arquivos de dados | Pegasus Mail Keyboard Macro | Pegasus Mail | David Harris |
| .PMW | David Harris | Arquivos de dados | Pegasus Mail Outgoing Draft Message | Pegasus Mail | David Harris |
| .PND | DATAIR | Arquivos de dados | DATAIR Pension System Pending Data | DATAIR Pension Reporter | DATAIR |
| .PNL | Missler Software | Arquivos de dados | TopSolid Nesting Module | TopSolid | Missler Software |
| .PNS | SourceForge | Arquivos de dados | PNG Stereo Image | 3D Vision Photo Viewer | NVIDIA |
| .PNT | Apple | Arquivos de dados | MacPaint File | MacPaint | Apple |
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