Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.

This Wikipedia is written in English. Many other Wikipedias are available; some of the largest are listed below.

Wikipedia[c] is a free-content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki.

English Wikipedia (marked blue in the graph) is the most-read version of Wikipedia, accounting for 48% of the website's global traffic as of 2021. The English Wikipedia is the most edited Wikipedia's language version of all time.

Wikipedia is a free online encyclopedia that anyone can edit, and millions already have. Wikipedia's purpose is to benefit readers by presenting information on all branches of knowledge.

A website (also written as a web site) is one or more web pages and related content that is identified by a common domain name and published on at least one web server.

In 2005, Wikipedia became the most popular reference website on the Internet, according to Hitwise, with English Wikipedia alone exceeding 750,000 articles. Wikipedia's first multilingual and subject portals were established in 2005.

Web most often refers to: Spider web, a silken structure created by the animal World Wide Web or the Web, an Internet-based hypertext system Web, WEB, or the Web may also refer to:

This is a screenshot of a website. The website in this picture is wikipedia.org. A website is a set of webpages that are joined. People look at websites with a computer of some kind, which can sometimes be the computer inside a mobile phone or a television. The websites are kept on computers called web servers.

A wiki (/ ˈwɪki / ⓘ WICK-ee) is a form of hypertext publication on the internet which is collaboratively edited and managed by its audience directly through a web browser. A typical wiki contains multiple pages that can either be edited by the public or limited to use within an organization for maintaining its internal knowledge base.