I've not heard of any. I've heard of Nintendo, SuperNintendo, and Gameboy Emulators, as well as a PSX emulator, but I've not heard of a Saturn one. That might be because of how the Saturn really didn't catch on. I've also heard that there was a crackdown going on with emulators awhile back, but I'm not too sure on how it is...
I don't know what Google brings up, but I'd guess you may not find too much.