1. Cgal : Computational geometry algorithms library,
http://www.cgal.org
2. Gipsi : General physical simulation interface,
http://gipsi.case.edu
3. Opentissue,
http://www.opentissue.org
4. Sofa : Simulation open framework architecture,
http://www.sofa-framework.org
5. Springs,
http://spring.stanford.edu