Kernelloader is a free bootloader for PS2 Linux and other Playstation 2 operating systems. Loading can be done by "Action Replay Media Player", by "memory card exploit", by "FMCB" or any other homebrew loading method.
If you downloaded the latest Linux Live DVD, you need to run the online updater to be able to play Youtube videos.
PCSX2 is a PlayStation 2 emulator for Windows and Linux, started by the same team that brought you PCSX (a Sony PlayStation 1 emulator). Currently, it can emulate thousands of games at full speed
PCSX2 For Unix is aimed towards giving PCSX2 - The Playstation 2 Emulator - better Unix support, such as Linux, FreeBSD, and hopefully even more *nix platforms. #pcsx2 on irc.freenode.org
PlayStation emulator from Russia written in pure ASM. Features DynaRec core and some HLE stuff. Uses PSEmuPro compatible plugins for most of the stuff.