Taxonomy
TREE-PUZZLE
Science, Biology, Taxonomy, Software - Tree Puzzle. Computer program to reconstruct phylogenetic trees from molecular sequence data by maximum likelihood.
http://www.tree-puzzle.de/
Universal Biological Indexer and Organizer
Science, Biology, Taxonomy - Universal Biological Indexer and Organizer. A networked information service for biological information resources, based upon the Taxonomic Name Server, a thesaurus of taxonomic information.
http://ubio.org
Systema Naturae 2000
Science, Biology, Taxonomy - Systema Naturae 2000. An up-to-date historical cross-referenced classification of life based on original authorative scientific literature.
http://sn2000.taxonomy.nl/
Tree of Life Web Project
Science, Biology, Taxonomy - Tree of Life. A project containing information about the diversity of organisms on Earth, their history, and characteristics.
http://tolweb.org/tree/