http://www.staff.science.uu.nl/~kouzn101/
"* Mathematical features: o continuation of generic and singular equilibria, periodic and homoclinic orbits; o detection of bifurcations, normal form computation, and branch switching; o computation and processing of orbits. * Software features: o user-friendly interface; o extendibility (dynamical systems and numerics); o portability of the numerical part and interface among the popular platforms; o 2D and 3D graphc windows; o on-line hypertext help with figures; o advanced storage, import and export of results." For more see: http://www.computeralgebra.nl/systemsoverview/special/diffeqns/content/section3_1.html Currently available at ftp://ftp.cwi.nl/pub/CONTENT/