GNU Octave - GNU Octave is a programming language for scientific computing.
OpenFOAM - OpenFOAM® - Official home of The Open Source Computational Fluid Dynamics (CFD) Toolbox.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
ANSYS Fluent - ANSYS engineering simulation and 3D design software delivers product modeling solutions with unmatched scalability and a comprehensive multiphysics foundation.
Xcos - Xcos is a graphical editor to design hybrid dynamical systems models.
QtOctave - QtOctave: a front-end for Octave/un Front-End para Octave