Literature

• Taxonomic literature and search for names in papers: Biodiversity Library

• botanicus digital library
• Hunt Institute for botanical documentation.

Zoology

• for names of locus and crickets (Orthoptera): Orthoptera Species File online (OSF) for names of beetles (Coleoptera): Coleoptera databases and catalogs
• for names of fish: FishBase
• for names of reptiles: Synopsis of the recent Reptilia
• selected databases for groups of plants and animals: Species 2000
• Standard abbreviations (Accronyms) for insect and spider collections of the world: Insect and Spider Collections of the World Web Site
• new and changed names in Entology: New Entomological Taxa

Both botany and zoology

• for threatened species: IUCN Red List of Threatened Species
• for standarised fieldnames: Taxonomic Databases Working Group and additions on the Berlin website
• The Society for the Preservation of Natural History Collections
• taxa protected by CITES: Appendices 1, II & III
• CITES registered institutes: Register

DNA

• NHN protocol for the use of herbarium material and DNA samples for DNA analyses sequenses: taxon entry of genbank
• blast searches on sequenties: BLAST 
• analyses programms for molecular data: EMBOSS

Geografie:

• finding places, etc.: NIMA
• botanic collection sites on Madagascar: Gazetteer to Malagasy Botanical Collecting Localities
• maps available in Wageningen (geodesk): Geo Key Select
• adminstrative divisions: Country data index
  
  maps showing major en minor areas:
• Tanzania: Tanzania administrative units and Tanzania adminstrative Divisions (map)
• Afriterra Maps

Translate:

• translations between several languages: SYSTRAN 
• translate botanic terms English to French and visa versa. Glossary of botanical terms in French and English
• Google translate

Phylogeny websites   

• Angiosperm Phylogeny Website

Nomenclatuur

• International Code of Botanical Nomenclature
• International Code of Nomenclature for Cultivated Plants
• International Code of Zoological Nomenclature