libBioLCCC is an open source library for prediction of peptide and protein retention time in liquid chromatography. It is based on BioLCCC model (Liquid Chromatography of Biomacromolecules at Critical Conditions). pyteomics.biolccc is set of Python wrappings around libBioLCCC. WWW: https://pypi.python.org/pypi/pyteomics.biolccc