Extension:SiteMatrix

The SiteMatrix extension adds a special page with a matrix of all sites of the Wikimedia Foundation. First a table of all normal language wikis, with blue links for existing wikis and red links for non-existing wikis. Below a list of other special projects (like Meta, Commons, Wikimania, ...), mostly the sites like.

API
This extension adds an API module that provides the same information as Special:SiteMatrix