Joomla! is an open-source CMS written in PHP and powered by an MVC-oriented framework. Over 6,000 extensions are available and can be installed through the admin interface. There is a Joomla StackExchange at http://joomla.stackexchange.com/: if your question is related to Joomla but not webmastery, then your should ask it over there.
Joomla is a free and open source cms build on a model–view–controller (MVC) web application framework.
- Website: https://joomla.org/
- Wikipedia: http://en.wikipedia.org/wiki/joomla
- Joomla.SE: http://joomla.stackexchange.com