The Wikimeia Foundation, Inc. is a non-profit charitable organization headquartered in San Francisco, California, USA, and organized under the laws of the state of Florida. It operates several online collaborative wiki projects including Wikipedia, Wiktionary, Wikiquote, Wikibooks (including Wikijunior), Wikisource, Wikimedia Commons, Wikispecies, Wikinews, Wikiversity, and Meta-Wiki. Its flagship project, the English-language Wikipedia, ranks among the top ten most-visited websites worldwide.