Synapse is an app for Mac and Windows that allows you to easily use your Kinect to control Ableton Live, Quartz Composer, Max/MSP/Jitter, and any other application that can receive OSC events. It sends joint positions and hit events via OSC, and also sends the depth image into Quartz Composer. In a way, this allows you to use your whole body as an instrument.
ccny_rgbd is collection of tools for real-time visual odometry and 3D mapping using RGB-D cameras such as the Kinect. The software is developed at the CCNY Robotics Lab and is available for download.