Drake
Drake ("dragon" in Middle English) is a C++ toolbox started by the Robot Locomotion Group at the MIT Computer Science and Artificial Intelligence Lab (CSAIL). The development team has now grown significantly, with core development led by the Toyota Research Institute. It is a collection of tools for analyzing the dynamics of our robots and building control systems for them, with a heavy emphasis on optimization-based design/analysis.
Please see the github wiki at https://drake.mit.edu for detailed documentation.
====
License: BSD (https://raw.github.com/RobotLocomotion/drake/master/LICENSE.TXT)