Joomla is an award-winning content management system (CMS), which enables you to build Web sites and powerful online applications. Many aspects, including its ease-of-use and extensibility, have made Joomla the most popular Web site software available. Best of all, Joomla is an open source solution that is freely available to everyone. New to content management systems?
The Joomla! package consists of many different parts, which allow modular extensions and integrations to be made easily. An example of such are extensions called "Plugins". Plugins are background extensions that extend Joomla! with new functionality. There are over 3,500 extensions for Joomla! available via the Extensions Directory.