From Joomla! Documentation
< Archived:Platform PortalRevision as of 02:44, 1 September 2012 by JoomlaWikiBot
The Joomla Platform is a platform for writing Web and command line applications in PHP. It is free and open source software, distributed under the GNU General Public License version 2 or later.
You can download the platform at https://github.com/joomla/joomla-platform