The OS X .dmgs seem mostly good though. Was able to poke around in Famitracker a bit. Ran into problems compiling a default project though.
There wasn't a readme on the dmg, and I didn't dig around too much to find out if I was supposed to have a particular version of cc65 installed. It worked once I fixed the .ini file though. The debugger seems pretty sweet! I've just been flying blind using Nestopia and a half finished 6502 emulator of my own.ld65: Error: Missing memory area assignment for segment `ONCE'
edit: Was playing around with Famitracker a bit more this morning and noticed that it idles at 100% CPU usage. Need to add a sleep to an event loop somewhere or something.