Visual3D is a proprietary general purpose biomotion modeling and analysis software package developed and published by C-Motion, Inc. The software makes use of the C3D file format for input data as well as real-time motion data streamed by several hardware manufacturers. The program is not restricted in terms of marker sets and provides a historical audit trail of data changes. Modeling features include kinematics, inverse dynamics (kinetics) and inverse kinematics (global optimizations).
Visual3D evolved from a clinical research tool developed at the NIH by Tom Keppel (originally called "Move3D").
Visual3D is used by academics, clinicians, sports analysts and others interested in understanding biological motion. For an example of gait analysis, this video.