PCSX is a free console emulator which allows software and peripherals designed to be used with the PlayStation to be used with personal computers.

PCSX-df is a fork of the PCSX Playstation emulator designed specifically for GNU/Linux (and probably other similar systems). It has a completely reworked and modernized GTK2/Glade GUI, integrated plugins, an improved system for classic PSEmu plugins, better configuration tools, support for translation, easy installation, and support for AMD64.

PCSX-Reloaded is a PlayStation Emulator based on PCSX-df 1.9, with support for Windows, GNU/Linux and Mac OS X as well as many bugfixes and improvements.