Unfortunately, some of those hacking features are exclusive to the Windows version currently (boooo), so maybe the project needs some help from Mac users. Basically it’s the “hacker’s choice” of NES emulator. There are other options for NES emulation on Mac OS X, but FCEUX offers tools for debugging, rom-hacking, map making, Tool-assisted movies, and Lua scripting. Fceux is a cross-platform, open-source NES emulator.