MediaWiki is a Wiki software package licensed under the GNU General Public License. It is written in PHP and uses an underlying MySQL relational database. Its logo symbolizes how its markup language uses brackets [[picture of flower]] to link articles together, in contrast to CamelCase.
Mediawiki is being developed by the Wikimedia Foundation. Lead developer is Brion Vibber.
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Related: Wikimedia, HowToBecomeAMediawikiHacker