This website will be undergoing maintenance on Wednesday July 18 from 2pm to 5pm PDT. We are also in the process of updating this documentation for OpenSim 4.0. Are you looking for OpenSim 3.3 documentation?

A Modern Visualizer

Mac Compatibility

Streamlined Data Import and Export

Flexible, Custom Modeling and Simulation Studies via C++, Matlab, and Python

New Components: Frames & Points to define, track, and report reference frames and points of interest

Bug Fixes and Expanded Testing