There is some software being made by Josh Klint of leadwerks Software called Boner3D.
It is a Auto rigging solution that does not cost a fortune and is royalty free.
Here is a video of it in action.
It is currently in its prototype phase and allot of work needs to be done.
He wants to support Unreal, Unity3D and his own engine Leadwerks. If you can show him some love on steam greenlight.
i think this application is very useful, maybe not for advanced riggers, but for programmers like me that sometimes need to rig a character to animate it in motionbuilder with a mocap file, it is very helpfully.
I think this was using kick starter to attract attention to his Leadwerjs Engine, no real attempt was made here to create a successful campaign. This type of dodgy marketing will only push legit prospective buyers even further back IMHO.