R Lang - R is a free software environment for statistical computing and graphics.
20-sim - 20-sim is commercial modeling and simulation program for multidomain dynamic systems, which is...
AMPL - A mathematical programming Library (AMPL).
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Xcos - Xcos is a graphical editor to design hybrid dynamical systems models.
jasymca - Jasymca is an interactive System for solving math problems.