Brekel Body

Brekel Body is a family of Windows applications for real-time markerless body motion capture using depth sensors, no suits or markers needed. You stand in front of one or more sensors, the software tracks your skeleton, and you record the result or stream it live into MotionBuilder, Unity or Unreal Engine.

The current version is Brekel Body v3. It supports a wide range of sensors, current and older (Azure Kinect, Orbbec, ZED, RealSense, both Kinect generations, even plain webcams), can align and fuse multiple sensors, can utilize modern deep-learning based tracking, do face tracking and is in active development. If you are starting fresh, this is the one to get.

The older versions remain available as cheaper options for specific hardware: Body v2 for the Kinect for Xbox One / Kinect for Windows v2 sensor, and Body v1 for the original Kinect for Xbox 360 / Kinect for Windows v1. Both sensors are second-hand only now, and neither app gets new features (occasional compatibility updates still happen).

Not sure which fits your setup? Each version has a free trial, and the FAQ on the v3 page covers sensor choices in more detail. How trials and licenses work: see licensing.