For calculating Hydrogen Bond

HBPLUS, which is distributed with LIGPLOT: http://www.biochem.ucl.ac.uk/bsm/ligplot/ligplot.html

There's also HBOND, which comes with the JOY package:
http://www-cryst.bioc.cam.ac.uk/~joy/

they are free, but they all need Academic License which I can't apply individually, has to apply by UMDNJ.