KGen

Sega Genesis emulator KGen is the predecessor of KGen98 and Kega. It's not as good as either of them so you may want to skip this. KGen98 is basically a total rewrite of KGen. It's similar to Genecyst but with slightly better compatability and accuracy. Plus, with 8-bit graphics and no VSync, it's reported to be faster than Genecyst. Still, Gens and Kega are better so you may want to skip this too.