REX
A few more ROMs (These are the same as the roms zip file from the REX docs, except for just Disk+2.0 and MFORTH. Disk+2.0 hasn't been uploaded anywhere before that I know of, and MFORTH is a newer version.)
Some roms in the roms zip from the REX docs have been patched to work better with REX, so generally you want to use these copies specifically rather than other copies of the same roms.