Wikidata


 * Referata Wikidata — launched 2010; for testing 'wikidata' from the Referata wiki farm;
 * Wikimedia Wikidata — launched early 2013; from the Wikimedia Foundation (WMF);
 * Wikimedia Wikidata Test — launched mid 2013; from the Wikimedia Foundation (WMF);
 * Uncyclomedia UnData — launched early 2019; from the Uncyclomedia Foundation;


 * ''See also
 * OmegaWiki — launched 2006; a comprehensive multilingual dictionary, and the first ever user of wikidata.


 * ''Related
 * Extension: Wikibase
 * Wikibase Registry
 * Extension: Semantic MediaWiki