Hi, I'm one of the developers of the Ghemical molecular modeling program: http://www.bioinformatics.org/ghemical/ I ran across your QC++ package on the net and the website said it was "freely available" under Linux, etc. Ghemical is made available under the GPL license and we currently use a public domain version of MOPAC7 for semi-empirical calculations, converted from Fortran. Would it be possible to make a version of your QC++ package available under a GPL-compatible license? In this case, we could use your package and help make it available to other audiences. Ghemical is already included in a variety of Linux distributions. Obviously it might also help you visualize calculation results since Ghemical already has code to visualize MOs, charge densities, etc. In short, would you consider some collaboration between the two projects? Cheers and best regards, -Geoff Hutchison -- -Geoff Hutchison <hutchisn@chem.northwestern.edu> Ratner/Marks Groups (847) 491-3295 Northwestern Chemistry http://www.chem.northwestern.edu/