(Human Activity Replication Tool) is a software tool for quick and easy modeling and simulation of human activities. It is a Python-based add-on to the Blender, a free and open-source 3D computer graphics software toolset (https://www.blender.org/). HART has been developed by Innovision, LLC.  under a SBIR Phase II program sponsored by the Air Force for which Innovision was a subcontractor to IAI (https://www.i-a-i.com/).