Joomla

Joomla! is an open source content management system for publishing content on the world wide web and intranets. The system includes features such as page caching to improve performance, RSS feeds, printable versions of pages, news flashes, blogs, polls, website searching, and language internationalization. Joomla is licensed under the GPL, and is the result of a fork of Mambo.

It is written with the PHP programming language and uses the MySQL database by default. Joomla is an innovative Content Management System that helps web designers design and build state-of-the-art websites even if they have had little or no prior experience with website building. With an abundance of powerful online applications, Joomla is a boon to amateur and professional web designers everywhere.