Joomla
Joomla is a free and open-source content management system (CMS) for publishing web content. It is built on a model–view–controller web application framework that can be used independently of the CMS.
Joomla is written in PHP, uses object-oriented programming (OOP) techniques (since version 1.5[2]) and software design patterns,[3] stores data in a MySQL, MS SQL (since version 2.5), or PostgreSQL (since version 3.0) database,[4][5] and includes features such as page caching, RSS feeds, printable versions of pages, news flashes, blogs, search, and support for language internationalization.