Available for PowerPC and Intel (works with limited success in VMware, can work well on some PCs from around the time it was made, old IBM ThinkPads work especially well with it) Basically NeXTSTEP with Apple's name on it This topic is intended to provide a quick-reference list of all the main beta and release versions of Mac OS X, along with a few notes on them and how what hardware or emulators you need to run each version on.