FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
VHDL Verification and Simulation Tool
tkinter wrapper for NASA CEA focused in rocket chemistry explanations
OpenNum lets you distribute solvers with a nice graphical interface
PySCeS Constraint Based Modelling
GUI for building, simulating and optimizing kinetic models.
GUI for managing and working with one or more HTCondor pools.
ZEMAX extension for selective assembly
A Library for Interactive Modelling and Visualisation
PyParticles is an opensource particles simulation tool box entirely wr
Python-based GUI for discrete-event system modeling and simulation