Wikipedia is the largest and most-read reference work in history, has consistently been one of the 10 most popular websites, and as of 2023 ranks as the 4th most viewed website by Semrush. Wikipedia is a free-content online encyclopedia written and maintained by a community of volunteers, collectively known as Wikipedians, through open collaboration and using a wiki-based editing system called MediaWiki.
Most text is also dual-licensed under GFDL media licensing varies
