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  1. Wikipedia, the free encyclopedia

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

  2. Wikipedia | Definition, Encyclopedia, History, & Facts | Britannica

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

  3. wiki - Wiktionary, the free dictionary

    Dec 17, 2025 · Noun wiki (plural wikis) A collaborative website which can be directly edited merely by using a web browser, often by anyone who has access to it.

  4. Wikipedia - Wikipedia

    In 2003, economics PhD student Andrea Ciffolilli argued that the low transaction costs of participating in a wiki created a catalyst for collaborative development, and that features such …

  5. What Is a Wiki? - Computer Hope

    Jun 14, 2025 · Wikis are known to be simple online databases where the community decides what information is relevant for each page or definition. Great examples of a wiki's work are …

  6. Home – Wikimedia Foundation

    We support protect fund openhuman knowledge We are the nonprofit that hosts Wikipedia. We support the people, technology, and policies that enable reliable information to be shared with …

  7. Wiki - Wikipedia

    "A wiki invites all users—not just experts—to edit any page or to create new pages within the wiki website, using only a standard 'plain-vanilla' Web browser without any extra add-ons."

  8. Wikipedia

    Wikidata Free knowledge base Wikiversity Free course materials Wikiquote Free quote compendium MediaWiki Free & open wiki application Wikisource Free library Wikispecies Free …

  9. Wikipedia:Contents - Wikipedia

    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.

  10. Wikipedia - Simple English Wikipedia, the free encyclopedia

    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 …