Impact is an explicit Finite Element Program Suite which simulates dynamic impact events. It has a range of elements, contact handling and different material laws. Models can be created, solved and analyzed with the included pre- and postprocessor. Impact is based on an Explicit Time stepping algorithm. These kind of codes are used to simulate dynamic phenomena such as car crashes and similar, usually involving large deformations.
Gri is a language for scientific graphics programming. It is
script-based, not GUI-based. Some users view it as a sort of LaTeX
for scientific graphics. Users who climb a slight learning curve are
rewarded with considerable aesthetic power.