Wikimedia

Wikimedia is a global movement whose mission is to bring free educational content to the world.

Through various projects, chapters, and the support structure of the non-profit Wikimedia Foundation, Wikimedia strives to bring about a world in which every single human being can freely share in the sum of all knowledge.

Wikipedia
Wiktionary
wikiBooks
Commons
wikiSource
wikiQuotes
wikiNews
Wikiversity
wikiSpecies