Letter: P
- paintdotnet - A mono port of the Paint.NET image editor
- pdflib-lite - Portable C library for dynamically generating PDF files
- perl-IP-Country - Fast lookup of country codes from IP addresses
- pgplot - Graphic library for making simple scientific graphs
- php-pecl-pdflib - Package for generating PDF files
- plus4emu - Portable emulator of the Commodore 264 family of computers
- proas - Planning of astronomical observations