TreeBASE: A database of phylogenetic knowledge.

NHPBD — Northern Hemisphere Plant Biogeographic Disjunctions

Tree of Life

GenBank: The Entrez entry site to Genbank’s search and retrieval system; query form; upload site

EMBL Nucleotide Sequence Database

PEET

ORBIS — Yale Library Database

phylogenetic programs

Felsenstein’s Page of Phylogeny Programs

MacClade

PAUP