About Galacticus

Galacticus is a semi-analytic model of galaxy formation written and maintained by Andrew Benson at The Carnegie Observatories.

Galacticus solves the equations that govern the formation and evolution of galaxies within a hierarchically assembling network of dark matter halos as occurs in cold dark matter dominated universes. It is designed for modularity and flexibility to allow for easy extension and adaptation.

You can get Galacticus here.

Galacticus is freely available under GPL v3.