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

Wikipedia is a free content online encyclopedia website in 344 languages of the world in which 342 languages are currently active and 14 are closed. It is written and maintained by a …

This app is made by the Wikimedia Foundation, a nonprofit organization that supports and operates Wikipedia. We provide this service in the pursuit of open knowledge that’s always ad …

Help us unlock the world’s knowledge. As a nonprofit, Wikipedia and our related free knowledge projects are powered primarily through donations.

Wikipedia is a free content online encyclopedia website in 344 languages of the world in which 342 languages are currently active and 14 are closed. It is written and maintained by a …

Oct 13, 2025 · An audio version of the English Wikipedia article about the hippocampus as of September 2025. The hippocampus is a major component of the brain of humans and many …

Explore your world, find a quick fact, or dive down a Wikipedia rabbit hole with the official Wikipedia app for iOS. With more than 40 million articles across nearly 300 languages, your …

Oct 9, 2025 · Wikipedia, free Internet-based encyclopedia, started in 2001, that operates under an open-source management style. It is overseen by the nonprofit Wikimedia Foundation. …

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

Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects: