It operates several online collaborative wiki projects including Wikipedia, Wiktionary, Wikiquote, Wikibooks, Wikisource, Wikimedia Commons, Wikispecies, Wikinews, Wikiversity, Wikimedia Incubator, Meta-Wiki and owns the now defunct, Nupedia.
Adda dagiti obra dagitoy a wiki nga nairaman ti Wikipedia, Wiktionary, Wikiquote, Wikibooks, Wikisource, Wikimedia Commons, Wikispecies, Wikinews, Wikiversity, Wikimedia Incubator, ken Meta-Wiki.