From the webpage:
All the vocabularies in the VEST Registry are classified by type and subject domain. Most of the Vocabularies are related to indexing. The purpose of indexing is to facilitate the search and finding of the content in a collection by the use of controlled/code lists, authority files or controlled subject vocabularies. The indexing ensures that the content will be found by users when they search specifically in information management systems. There are different type of vocabularies like authority files, classification systems, concept maps, controlled lists, ontologies, taxonomies or subject headings. But under the concept Vocabularies you can find as well dictionaries, encyclopedies, glossaries, lexical databases or topic trees.
If I am reading the webpage correctly, 116 separate vocabularies.
Browse through them to get an idea of the range of materials here.
Just on the homepage I see:
African Studies Thesaurus
A structured vocabulary of 12,100 English terms in the field of African studies, the African Studies Thesaurus is developed and maintained by staff at the library of the African Studies Centre Leiden. It is used for indexing and retrieving material in the library collection and is directly linked to the catalogue.
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ARABTERM United Nations Multilingual Terminology Database of the Arabic Translation ServiceARABTERM is a multilingual terminology database which provides United Nations nomenclature and special terms in four of the official UN languages – Arabic, English, French and Spanish. The database is mainly intended for use by the language and editorial staff of the United Nations to ensure consistent translation of common terms and phrases used within the Organization.
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Biological EntitiesThis ontology manages reference data about biological species needed for fisheries fact sheets and statistical information, among other resources. Species items are organized and maintained in the Aquatic Science and Fisheries Information System (ASFIS) and currently includes nearly 11.000 species items related to Fisheries and Aquaculture.
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CABI thesaurusThe CAB Thesaurus is the essential search tool for all users of the CAB ABSTRACTS™ and Global Health databases and related products. The CAB Thesaurus is not only an invaluable aid for database users but it has many potential uses by individuals and organizations indexing their own information resources for both internal use and on the Internet..
No slight intended towards any vocabulary I didn’t mention. Just a random listing from the homepage.
Why rebuild when you can re-use? (And map.)