> I am hunting for a free peptide mass fingerprint database searching sofware
> which I can run under unix or windows. Can someone help me?
Darwin has a function to do that as well as serching in DNA
databases for mass fingerprints. Darwin is distributed for free.
See http://cbrg.inf.ethz.ch/bio-recipes/MolWeight/code.html for
the details of the use and algorithms behind.
Best wishes, Gaston Gonnet.