I'm the Mac PlaneShift porter, and I'm the one working on the port of PlaneShift to MacOS/X.

I've updated the thread linked to by this article with further information on what the current state of PlaneShift on the Mac is.

Currently, I need more help from the community in solving performance problems under MacOS/X of the CrystalSpace rendering engine that PlaneShift uses for its client; if anyone would like to assist in this development effort, and has experience using Apple's GL implementation on NVidia and ATI hardware, please contact me at gblock@ctoforaday.com.