If you're interested in the development of the Macintosh port of PCSX, this will be where to go. PCSX now also has a presence on sourceforge.net as pcsxosx. The SF.net project is still WIP but feel free to check it out.

Status

The first public test version of the port has been released. Some details are still missing like cd audio support.
The source code is available for download for anyone interested in it.

Plugins

PCSX uses the same standard plugin interface as most other PC emulators use, with only minor extensions and clarifications. This is done to facilitate easy porting of existing plugins for Windows and Linux Playstation emulators. If you are interested in porting a new plugin or writing your own, you should contact me for further details. In order to make PCSX work out of the box, several open-source plugins has already been ported and a couple of new ones written.