Wikidata Free knowledge base Wikiversity Free learning resources Wikiquote Free quote compendium MediaWiki Free & open wiki software Wikisource Free content library Wikispecies Free species …

Welcome! The Wikimedia movement is a global community of people, projects, and activities working together to create and share knowledge freely. Join us in making all knowledge available to …

Dec 7, 2025 · Wikipedia is a free Internet-based encyclopedia, started in 2001, that operates under an open-source management style.

Wiki engines usually allow content to be written using a lightweight markup language and sometimes edited with the help of a rich-text editor. [6] There are dozens of different wiki engines in use, both …

Jan 9, 2026 · wiki, website that can be modified or contributed to by users. Wikis can be dated to 1995, when American computer programmer Ward Cunningham created a new collaborative technology for …

Official website English Wikipedia on Meta-Wiki Categories: English Wikipedia Wikipedias in Germanic languages Encyclopedias in English Global culture Internet properties established in 2001 2001 …

Wikipedia's name is a combination of two words, wiki and encyclopedia.[3] Wikipedia was started on January 9, 2001, by Jimmy Wales and Larry Sanger as part of an earlier online encyclopedia named …

Overview Every wiki can be changed, or edited, by anyone who has an account on the wiki, or by everyone in the world if the wiki allows it. Some important pages can only be changed by certain …

Easily explore Wikipedia using the topic links below. You can also search directly using the search bar. All section headers are clickable for quick navigation.

Commons Free media repository MediaWiki Wiki software development Meta-Wiki Wikimedia project coordination Wikibooks Free textbooks and manuals Wikidata Free knowledge base