Classification Society of North America
List of cluster analysis software
Genetics Software from the Slatkin Lab
Links to sites for downloading phylogenetic software.
Georg Fuellen
Multiple Alignment Resources
IUBio Archive
Molecular evolution software
IUBio Archive
Macintosh molecular biology software
Joe Felsenstein's list of phylogeny programs
Probably the most comprehensive
Willi Hennig Society - Education
Links to recent books, software, and resources.