OpenFOAM - OpenFOAM® - Official home of The Open Source Computational Fluid Dynamics (CFD) Toolbox.
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.
ANSYS Fluent - ANSYS engineering simulation and 3D design software delivers product modeling solutions with unmatched scalability and a comprehensive multiphysics foundation.
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
ARIS Express - ARIS Express is based on the proven ARIS methodology and industry standards.