This thread has various links of where to download the latest WarpOS releases and the likes.
It's probably a good idea to use Frank Willie's PowerUp emulation libraries to save you from having to swap between PPC OSes all the time.
I've listed all the versions and names of the various libraries involved.
The thread is about installing a Blizzard Vision card, but ignore those bits, you only need the PPC OS relevant bits.
Gosh, I remember having such a fantastic time installing the CyberGraphX software. It wasn't at all confusing, the documentation was truly outstanding, the install scripts were flawless and everything worked brilliantly first time.
blatantlies.