Artifex is a Commodore 16, and Commodore plus/4 emulator. Quite similar to Yape and Minus4, it does a decent job.
* cycle exact emulation
* all standard cpu instructions
* some undocumented cpu instructions
* partial graphic emulation
* full sound emulation
* full keyboard emulation
* "read only" tape (mtap) and disk (d64) emulation
* debugger system