NW is an implementation of the Needleman and Wunsch dynamic programming sequence alignment algorithm. It reads PIR format sequence files and reports sequence similarity calculated in a number of different ways. Optionally it can generate a PIR format alignment file.
NW is freely available for use by not-for-profit organisations. Commerical use is not permitted without the permission of the author.
NW is supplied as a gzipped tar file of source code.