8 Like Wikidata Good alternative? YES NO Wikidata is a free and open knowledge base that can be read and edited by both humans and machines. Wikidata acts as central storage for the structured data of its... Free Open Source Web Multiple languages Add a feature
2 Like YAGO Good alternative? YES NO YAGO2s is a huge semantic knowledge base, derived from Wikipedia WordNet and GeoNames. Currently, YAGO2s has knowledge of more than 10 million entities (like persons... Free Open Source Web Java Mobile Knowledge base Add a feature
2 Like OpenCyc Good alternative? YES NO OpenCyc is a cut-down open version of the Cyc technology, the world's largest and most complete general knowledge base and commonsense reasoning engine. Cycorp, the... Free Windows Linux Knowledge base Natural Language Processing Add a feature
