PCSX2 - Online Network Support and keyboard support.
The new PCSX2 plays PS2 games close to full speed and now supports online play! The authors and beta testers have successfully played Monster Hunter online on the official servers with people playing on real PS2s. Keyboard support was then added for chatting.
There is no release with these features yet and please do not bug the authors about one. You can however play with the latest released version.