ASE, although not specifically for ASE, gets a lot of love from DCC RPG Judges and players.
It is a Vancian sort of almost Thundar-esque scenario of fantasy within superscience. A medieval society built on the ruins of former super-technological society.
Patches of civilization are ruled by tyrannical sorcerers who war with each other.
Check out the ase_players_guide.
ASE 1 and ASE 2 & 3 are available in print or pdf from lulu.