Some resources in biology and taxonomy:
- Biology Web Directory – Biology Resources Online (including various topics)
- Encyclopedia of Life (EOL), including TraitBank, a searchable, comprehensive, open digital repository for organism traits, measurements, interactions and other facts for all taxa across the tree of life
- Integrated Taxonomic Information System (ITIS)
- Species 2000
- Taxonomy of Flowering Plants
- Tree of Life (ToL)
- Tropicos (Missouri Botanical Garden)
