One of the lesser known available for Mac - https://github.com/TomHarte/CLK
It can emulate zx80/81 and ZX Spectrum.
Best Mac emulator?
Re: Best Mac emulator?
I've started to used NO$ZX emulator under DosBox on my Mac.
It works great, and has a great debugger built in.
It works great, and has a great debugger built in.