The SLSI NUI Interaction Scripts is a collection of Python addons to support the creation of sign language animations in Blender using Natural User Interfaces, such as the Microsoft Kinect and the Leap. It also support direct facial control of MakeHuman characters via FaceShift. The following video gives an overview of the functionalities.
The development started with my working activity at DFKI in January 2013.
The whole repository can be found at the group resources page http://slsi.dfki.de/software-and-resources/ or fetched directly from Github https://github.com/alexisheloir/slsi-nui-interaction-scripts.