Our differential geometic parameteres software package can be downloaded for free for academic researchers only. Although the authors developed the software to the best of their knowledge they are not responsible for the correctness and/or any damage caused by the software. Researches that use the software for their publications are requested to cite: Differential geometric analysis of alterations in MH alpha-helices. B. Hischenhuber, H. Havlicek, J. Todoric, S. Hoellrigl-Binder, W. Schreiner and B. Knapp. 2013. J Comput Chem. 34(21):1862-79.