| plb | Visual FoxPro Library |
| plc | PL/B Source Code |
| pld | Oracle PLD Library |
| plex | Visual Perl File |
| plg | µVision Protocol Data |
| pli | PL/I Source Code |
| pll | CA-Clipper Prelinked Library |
| Oracle PLL Library |
| plm | PL/M Source Code |
| plog | PLog Language Source Code |
| PVS-Studio XML Analyzer Report |
| pls | PL/SQL Stored Procedure |
| plsql | Oracle PL/SQL Source Code |
| pltsuite | Safari Page Load Test Suite |
| plx | Datarescue IDA Plug-in |
| Oracle PLX Library |
| Perl Executable |
| pm | Perl Module |
| pm5 | Perl 5 Module |
| pm6 | Perl 6 Module |
| pmq | Microsoft Target Analyzer File |
| pn | Pinecone Source Code |
| pnl | Uniface Panel Data |
| pnw | PNW Source Code |
| pnx | Xilinx ISE CPLDFit Model Data |
| po | GNU Gettext Portable Object |
| pod | Parrot Optimizer Data |
| Perl POD Document |
| podspec | CocoaPods Library Specification Data |
| poh | Geoworks Optimized GOH File |
| policy | Java Policy Implementation Data |
| pom | Apache Maven Build |
| porth | Porth Source Code |
| pos | WinHex Position Data |
| postbuild | Xenocode Postbuild Data |
| pot | GNU Gettext Portable Object Template |
| pou | PLCEdit Program Organization Unit |
| pp | FreePascal Source Code |
| Pascal/Delphi Source Code |
| Perl Data Language PreProcessor Data |
| pp1 | FreePascal GO321v1 Compiled Unit |
| ppl | FreePascal Shared Library |
| ppo | Clipper Pre-processed Output File |
| Free Pascal Compiled Unit |
| ppu | FreePascal Compiled Unit |
| pql | VisualPQL Source Code |
| pr2 | dBASE IV Printer Driver |
| pr3 | PFXplus Resource Data |
| prc | Uniface Global Proc Data |
| Visual Studio .NET DB Project Stored Procedure |
| prd | RISCWatch Processor Resource Definition |
| pref | Adobe Device Central Preferences Data |
| prefab | Unity Prefab |
| prf | BasicX Preferences File |
| prg | CA-Clipper Program Source Code |
| Visual FoxPro Program |
| xBase++ Program |
| pri | Microsoft Windows Compiled Resource Data |
| Package Resource Index Data |
| Qt Creator Project Include |
| prl | Perl Script |
| prm | Prolog Module Source Code |
| Xilinx ISE PROMGen Memory Map Data |
| prn | DataFlex Graphic Device Driver |
| pro | Prolog Source Code |
| Qt Creator Project |
| profile | Godot Engine Feature Profile Data |
| projdata | Visual C# Project Data |
| project | Eclipse IDE Project Settings Data |
| projectproperties | Alpha Five Web Project Properties Data |
| prop | Android Build Properties Data |
| properties | Java Properties File |
| props | Visual Studio Property Sheet |
| proto | Protocol Buffers Data |
| PureScript Protobuf Source Code |
| provxml | Microsoft Windows Provisioning XML Data |
| prq | InstallShield Prerequisites |
| prs | dBASE Procedure Data |
| prx | Visual FoxPro Compiled Program |
| ps1 | Windows PowerShell Script |
