The MATLAB Reservoir Simulation Toolbox (MRST) is developed by SINTEF Applied Matemathics.
Version 2014b was released on the 12th of November 2014, and can be downloaded under the terms of the GNU General Public License (GPL).
The toolbox consists of two main parts:
MRST is mainly intended as a toolbox for rapid prototyping and demonstration of new simulation methods and modeling concepts on unstructured grids. Despite this, many of the tools are quite efficient and can be applied to surprisingly large and complex models. For more computationally challenging cases, we are developing C-accelerated backends or standalone C++ solutions as part of the Open Porous Media (OPM) initiative.
MRST has a large user base: each of the last releases has between 700 and 1100 unique downloads.
If you use MRST to write a scientific publication, we request that you cite the MRST book or one of our overview papers: