A wiki is a website that anyone can participate in. From writing about your favorite topic, to adding a photo or fixing a typo, a wiki is a place where anyone can contribute and collaborate.

Wikidata Free knowledge base Wikiversity Free course materials Wikiquote Free quote compendium MediaWiki Free & open wiki application Wikisource Free library Wikispecies Free species directory Meta-Wiki Community coordination & documentation

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 everyone, everywhere.

Wikipedia uses collaborative software known as a wiki that facilitates the creation and development of articles. Although some highly publicized problems have called attention to Wikipedia ’s editorial process, they have done little to dampen public use of the resource, which is one of the most visited sites on the Internet.

Wikimedia Foundation joins Digital Public Goods Alliance to champion open knowledge infrastructure Community The winners of the 2025 Wiki Loves Monuments photo contest Community “Cinematic intensity”: The winners of Wiki Loves Earth 2025 Our projects

A wiki is a collaborative website that allows multiple users to create, edit, and organize content together in real time. The most famous example is Wikipedia, but wikis are used by companies, communities, and individuals to share knowledge and information.

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