This software is a computer program whose purpose is to model and simulate microbial communities in an individual-based way. It is described in detail in this paper:
Lardon LA, Merkey BV, Martins S, Dötsch A, Picioreanu C, Kreft JU & Smets BF (2011). iDynoMiCS: next-generation individual-based modelling of biofilms.

You can get access to two different versions of this software:
iDynomics v1.0:
iDynomics v1.31: