Europeana collections

http://europeana.eu/portal/

Internet Archive

https://archive.org/

The European Library (diretório)

http://www.theeuropeanlibrary.org/tel4/

UNESCO

http://www.unesco.org/new/en/unesco/resources/online-materials/publications/unesdoc-database/

http://databases.unesco.org/thesaurus/

http://termweb.unesco.org/

Biblioteca Nacional

http://purl.pt/index/geral/PT/index.html

Biblioteca Instituto Camões

http://cvc.instituto-camoes.pt/conhecer/biblioteca-digital-camoes.html

Biblioteca Digital Hispânica

http://www.bne.es/es/Catalogos/BibliotecaDigitalHispanica/Inicio/index.html

Biblioteca de França

http://gallica.bnf.fr/

Biblioteca do Congresso

http://www.loc.gov/library/libarch-digital.html

Biblioteca Nacional do Brasil

http://bndigital.bn.br/

Digital Public Library of America

http://dp.la/

Outros thesauri, glossários e terminologia de bases de dados:

UNESCO-IBE Education Thesaurus: (Educação)

http://www.unesco.org/unesdi/index.php/eng/thesaurus/tous.18

Food and Agriculture Organization Thesaurus: AGROVOC

http://www.thefreedictionary.com/Food+and+Agriculture+Organization

General Multilingual Environmental Thesaurus: (Ambiente)

https://www.eionet.europa.eu/gemet/

UK Archival Thesaurus: UKAT – vocabulário controlado para arquivos

http://www.ukat.org.uk/

UN Bibliographic Information System Thesaurus: (sistemas de Informação)

https://lib-thesaurus.un.org/lib/dhlunbisthesaurus.nsf/$$searche

Terminology database of the International Labour Organization: (Organização Internacional de trabalho) ILOTERM

http://www.ilo.org/inform/onlineinformationresources/databases/terminology/lang--en/index.htm

United Nations glossaries

https://unterm.un.org/