This is the source code repository of the biochemical network modeling package MASS Toolbox. All user relevant information can be found here.
The latest version can be installed by running the following
Import["https://raw.githubusercontent.com/opencobra/MASS-Toolbox/master/WebInstall.m"]
in a Mathematica notebook. For other installation options see here.
A manuscript is in preparation for publication and will be the proper reference for citing the MASS toolbox in the future. For now you can include 
All code is licensed under the 3-clause BSD license (see LICENSE). The only exception is the AutomaticUnits folder that contains a slightly modified version of the Automatic Units package developed by Jon McLoone. Written permission to include and modify the package has been obtained from Jon (see correspondence).