Lucerne Systems

Free
Rainbow is an Atari 800 Series Emulator for Macintosh.
Free
Nestopia is a Nintendo Entertainment System (NES) emulator for the Mac
Free
Adds a range of additional features and options to a series of emulators.
Free
Nestopia is the current king of the NES emulation hill.
Free
Emulate the SAM Coupe 512K computer and can also function as a Spectrum emulator.
Bandai Wonderswan emulator for the Mac.Oswan is the first Wonderswan emulator to be released for the Mac platform.
Free
Neopocott is able to run titles that rely on precise timing.
Free
Vecx can run just about all the Vectrex software out there.
Free
ViBE emulates the Nintendo Virtual Boy, a 3D Headset console released by Nintendo in the early 1990s.
Free
fMSX was one of the first MSX emulators to be released.
Free
Generator provides surprisingly fast performance for an emulator.
Free
TGEmu features reasonably good compatibility with PC Engine HuCards.
Free
A Sega Master System and Sega Game Gear emulator.
Free
KiGB is a Game Boy and Super Game Boy emulator for the Mac.
Free
BSNES is a Super Nintendo emulator for Mac OS X designed for accuracy.
Free
Genesis Plus is a free Sega Genesis emulator for the Mac.
Free
Boycott Advance is a Nintendo Game boy Advance emulator.
Free
Emulate Amstrad CPC/CPC+ elements on a Mac.
Free
Fuzzbug is an extremely preliminary Spectrum ZX Emulator for Mac OS X.
Free
Emulator of the Colecovision with an Easter egg.