SUMO is a microscopic, multi-modal traffic simulation.
Object-oriented equation-based modelling and optimisation software
ASALI is an open-source code for chemical engineers
Multiscale Neuroscience and Systems Biology Simulator
This is a template Python code set to use JModelica easily.
Fluid2D is the Swiss army knife of 2D CFD
The educational lattice Boltzmann code
Python-based GUI for discrete-event system modeling and simulation