Sure but it's all in how you use it. Not everything comes over cleanly but a lot does. AppKit is old and crufty and doesn't play well with Core Animation. Since

Sure but it's all in how you use it. Not everything comes over cleanly but a lot does. AppKit is old and crufty and doesn't play well with Core Animation. Since Chameleon is Core Animation-based, it's already off to a better start than AppKit.