GitHub - wikimedia/mediawiki-extensions-MassMessage: Github mirror of MediaWiki extension MassMessage - our actual code is hosted with Gerrit (please see https://www.mediawiki.org/wiki/Developer_access for contributing
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Extension:Interwiki - MediaWiki
MediaWiki extension Cargo Introduction - YouTube
Mediawiki Forms to present and edit data with key-value structure – Helge's blog