bsnes-plus (or bsnes+) is a fork of bsnes (based on bsnes-classic) intended to introduce some new features and improvements, mostly aimed at debugging.
Contains the 64-bit builds (with both “compatibility” and “accuracy” profiles supported for 64-bit users).
Check release site for latest update.
Relevant link: https://github.com/devinacker/bsnes-plus
File download:
