Outline of Wikipedia
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The following outline is provided as an overview of and a topical guide to Wikipedia:
Wikipedia[note 1] is a free content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the use of the wiki-based editing system MediaWiki. Wikipedia is the largest and most-read reference work in history.[1][2] It is consistently ranked as one of the ten most popular websites in the world, and as of 2024 is ranked the fifth most visited website on the Internet by Semrush,[3] and second by Ahrefs.[4] Founded by Jimmy Wales and Larry Sanger on January 15, 2001, Wikipedia is hosted by the Wikimedia Foundation, an American nonprofit organization that employs a staff of over 700 people.[5]
Initially only available in English, editions in other languages have been developed. Wikipedia's editions, when combined, comprise more than 63 million articles, attracting around 2 billion unique device visits per month and more than 14 million edits per month (about 5.2 edits per second on average) as of November 2023[update].[6][7] Roughly 26% of Wikipedia's traffic is from the United States, followed by Japan at 5.9%, the United Kingdom at 5.4%, Germany at 5%, Russia at 4.8%, and the remaining 54% split among other countries, according to data provided by Similarweb.[8]