FlexHopper offers very fast physics simulation within Grasshopper. It is based on FlexCLI, an open-source C++/CLI interface to access the physics engine NVidia Flex from the .Net environment. FlexCLI is built against NVidia Flex release 1.1.0. NVidia Flex is a patented property of NVidia.
Find the full source repository for FlexHopper and FlexCLI as well as all information and latest updates at https://github.com/HeinzBenjamin/FlexCLI