DC Adventures Hero's Handbook
Based on the same game system as Mutants & Masterminds Third Edition and published by Green Ronin, DC Adventures is a licensed IP game based on the DC comics superhero universe, ie Superman, Batman and others.
True20
True20 is a universal generic role-playing game designed by Steve Kenson and published by Green Ronin Publishing. It is based on the OGL and SRD and has its own separate logo license.
Mutants & Masterminds
A superhero game based off of the d20 open game license.