The Taxonomy Database is a curated classification and nomenclature for all of the organisms in the public sequence databases. This currently represents about 10% of the described species of life on the planet.
The goal of the Species 2000 project is to create a validated checklist of all the world's species (plants, animals, fungi and microbes). The site brings together an array of global species databases covering each of the major groups of organisms.
A collection of information about biodiversity compiled by expert and amateur contributors. Its goal is to contain a page with pictures, text, and other information for every species and for each group of organisms, living or extinct. Connections between ToL web pages follow phylogenetic branching patterns between groups of organisms, so visitors can browse the hierarchy of life and learn about phylogeny and evolution as well as the characteristics of individual groups.