Reaktoro is an open source framework for modeling chemically reactive systems. The chemical simulations are based on Gibbs energy minimization (GEM) methods as well as a revised law of mass action (rLMA) approach. See our project page for more details.
SaintBernard is a MOOSE application that models flow and transport through lower dimensional rough fractures. It is MPI compliant and is suitable for high-performance computing. See our project page for more details.