**BCL::Commons™** (also known as the BioChemistry Library Project) is an object oriented C++ programming library. The library is designed to simulate biological molecules – proteins and peptides in particular – as well as small chemicals such as therapeutics. It comprises mathematical methods to evaluate the energy of these molecules in their natural environment. *Licensing BCL::Commons* Modules of the BCL::Commons suite are available for license in either  Commercial Edition or Academic Edition at Meiler Lab BCL::Commons website