DBpedia SPARQL endpoint
FreeDegradedNot yet verified
SPARQL queries over facts extracted from Wikipedia infoboxes: people, places, works and their links.
Example request
curl -s 'https://dbpedia.org/sparql?query=SELECT%20%3Fpop%20WHERE%20%7B%20dbr%3ABerlin%20dbo%3ApopulationTotal%20%3Fpop%20%7D&format=application%2Fsparql-results%2Bjson'
Free tier, in plain English
Free and keyless under a fair-use policy of up to 100 requests a second per IP; long queries may return partial results.
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