Wikipedia is a free-content online encyclopedia, written and maintained by a

community of volunteers, collectively known as Wikipedians, through open

collaboration and the use of wiki-based editing system MediaWiki.

Wikipedia is the largest and most-read reference work in history. It has been

ranked consistently one of the 10 most popular websites in the world, and, as of

2023, ranks as the 4th most viewed website by Semrush. It single-handedly

made hard-bound encyclopedias for the home and library, including the

venerable Encyclopedia Britannica, obsolete.