Wikimania is the annual conference celebrating all the free knowledge projects hosted by the Wikimedia Foundation – Wikimedia Commons, MediaWiki, Meta-Wiki, Wikibooks, Wikidata, Wikinews, Wikipedia, Wikiquote, Wikisource, Wikispecies, Wikiversity, Wikivoyage, Wiktionary – with three days of conferences, discussions, meetups, training, and workshops. Hundreds of volunteers and Free Knowledge leaders from around the world gather to discuss issues, report on new projects and approaches, and exchange ideas.