Package Support Framework Kindprogramming tool, free and open-source softwareImplemented inC++LicenceMIT License
Panda3D Kindapplication software, game engine, Python package, free softwareImplemented inC++, PythonLicenceBSD licenses
Parchment Kindinteractive fiction interpreter, web applicationImplemented inTypeScriptLicenceMIT License
Pcap Kindapplication programming interface, software library, game engineImplemented inCLicenceBSD licenses
Pelican Kindfree software, static site generatorImplemented inPythonLicenceGNU Affero General Public License, version 3.0
PFUnit Implemented inFortranLicenceNASA Open Source AgreementLatest version4.20.1 (September 11, 2026)
Phonon Kindmultimedia framework, free softwareImplemented inC++LicenceGNU Lesser General Public License, version 2.1
Phorge Kindissue tracking system, code reviewing software, forge, source code repository, free and open-source software, collaborative development environment, wiki software, bug tracking systemImplemented inJavaScript, PHPLicenceApache Software License 2.0
PICO-8 Kindvirtual machine, proprietary software, fantasy consoleLicenceproprietary licenseAppeared2015
PikiPiki Kindfree and open-source software, wiki softwareImplemented inPythonLicenceGNU General Public License, version 2.0
PLIB Kindsoftware library, game engine, free softwareImplemented inC++LicenceGNU Lesser General Public License
Plone Kindcontent management system, web framework, free softwareImplemented inPythonLicenceGNU General Public License, version 2.0
Podman Kindfree and open-source software, container runtimeImplemented inGoLicenceApache Software License 2.0
Polkadot SDK Implemented inRustLicenceGNU General Public License, version 3.0, Apache Software License 2.0Appeared2018
PolyAnalyst Kindproprietary software, computing platform, data analysis software, report generatorAppeared1994DeveloperMegaputer Intelligence
PrBoom Kindfree software, source portLicenceGNU General Public License, version 2.0 or laterBased onBoom
Preact Kindwidget toolkit, web framework, JavaScript frameworkImplemented inJavaScriptLicenceMIT License
ProcessWire Kindcontent management system, web framework, free softwareImplemented inPHPLicenceMozilla Public License
PsDooM Kindfree software, source portLicenceGNU General Public License, version 2.0DeveloperDennis L Chao
PukiWiki Kindfree software, wiki softwareImplemented inPHPLicenceGNU General Public License, version 2.0 or later, GNU General Public License
Pyjs Kindwidget toolkit, web framework, free softwareImplemented inPythonLicenceApache Software License 2.0
Pylons Kindweb framework, Python package, free softwareImplemented inPythonLicence3-clause BSD License
Pyramid Kindweb framework, Python package, free softwareImplemented inPythonLicenceRepoze Public License
Python-Ogre Kindsoftware library, game engine, free softwareImplemented inPythonLicenceGNU Lesser General Public License
PyTorch Kindsoftware library, machine learning framework, Python package, free and open-source softwareImplemented inC, C++, Python, CUDALicence3-clause BSD License