François Beaune is the project founder and team leader of Appleseed, which is a render engine that is completely open source like Cycles or Luxrender. Appleseed is MIT-Licensed, which is probably the most liberal license in existance. It is availabe for Maya, Blender, Gaffer and other programs.
Before joining the team at CG Masters, Aidy Burrows worked on several games of the Legos series at TT games, which is part of Warner Brothers Interactive Entertainment. in this interview, he talks about using Blender at his former workplace.