Christian Bauer, author of the famous ShapeShifter Mac emulator (68k only), has released the source code to his famous app. You can find it here:
There were many mac emulators in the 90's for the Amiga, one of which was by very talented author Jim Drew (Emplant, Fusion, etc). I do believe at the time, he made some accusations that C Bauer used stolen Apple code (and maybe Emplant code) in his product, which was very popular and made a lot of money for C Bauer at the time. I guess we can find out now if anyone wants to try to find it.