From Joomla! Documentation
Portal:DevelopersRevision as of 18:27, 25 September 2013 by Tom Hutchison
The development of Joomla! itself is carried out by the Development Working Group and third party developers. This page is for development of components, modules, plugins and templates. For more about core Joomla! development, how to contribute and becoming more involved with the core code, you so go to Joomla! Code Contributors.