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MediaWiki

MediaWiki is the free, open-source PHP wiki engine that powers Wikipedia and its sister projects. It originated in 2002 from work by Magnus Manske to replace UseModWiki and standardised the [[Page Title]] double-bracket wikilink.

MediaWiki is a free, open-source wiki engine written in PHP, originally developed to run Wikipedia and now used by every project of the Wikimedia Foundation as well as many third-party sites. Wikipedia initially ran on UseModWiki, a Perl engine maintained by Clifford Adams; in mid-2001 Magnus Manske, then a student at the University of Cologne and a Wikipedia contributor, began rewriting the software in PHP with a MySQL backend to handle the project's growth. His engine, known informally as the "Phase II" software, went live on the English Wikipedia on 25 January 2002; a successor rewrite by Lee Daniel Crocker ("Phase III") was renamed MediaWiki in 2003. MediaWiki preserved UseModWiki's free-link syntax — pages are referenced as Page Title rather than via CamelCase — and standardised it as the canonical wiki-link form. Other defining features include namespaces (article, talk, user, template, etc.), categories, templates with parameters, an extensive permission system, full revision history with diffs and rollback, and a large extension ecosystem covering parser hooks, authentication, and visual editing. The wikitext-to-HTML parser is one of the most heavily used in the world, processing edits to Wikipedia in dozens of languages every second.

Metadata

Topic

Uncategorized

Confidence

92%

Sources

1 source

Views

Created

June 04, 2026

Community

0 0

Related Knowledge

WikiWikiWeb and the Origin of Wikilinks

related Strength: 70%

Wikipedia

related Strength: 65%

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