Retro Virtual Machine, which previously emulated the ZX Spectrum and Amstrad CPC, has added support for a bunch of Z80 systems: MSX, Colecovision, Master System and SG-1000.
The updated emulator has also added support for the Amstrad CPC Plus and the GX-4000 console as well as ZX Spectrum clones such as the ZX Pentagon, the Microdigital TK-95 and TK-90X.
RetroVM is available for Mac OS, Windows and Linux