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Knowledge Bases
Structured and encyclopedic knowledge sources.
JSON: /api/v1/directory.json (filter on category=knowledge-bases)
Wikidata
Free collaborative knowledge base of structured facts, queryable by SPARQL and a REST API.
FreeNo authWikipedia API
Read article text, summaries and search results from Wikipedia and sister projects without a key.
FreeNo authREST Countries
Simple API returning facts such as capitals, currencies and languages for every country.
FreeNo authOpen Library API
One webpage for every book ever published!
FreeNo auth