Wikipedia (/ˌwɪkɪˈpiːdiə/ (listen) wik-ih-PEE-dee-ə or /ˌwɪki-/ (listen) wik-ee-) is a free content, multilingual online encyclopedia written and maintained by a community of volunteers through a model of open collaboration, using a wiki-based editing system. Individual contributors, also called editors, are known as Wikipedians. It is the largest and most-read reference work in history,[3] and consistently one of the 15 most popular websites ranked by Alexa; as of 2021,[update] Wikipedia was ranked the 13th most popular site.[3][4] A visitor spends an average time on Wikipedia of 3 minutes and 45 seconds each day.[5] It is hosted by the Wikimedia Foundation, an American non-profit organization funded mainly through small donations.[6]
