Joomla

Joomla! is the most popular and widely supported open source multilingual CMS platform in the world, offering over 65 languages. 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.
Corporate Web sites or portals
Corporate intranets and extranets
Online magazines, newspapers, and publications
E-commerce and online reservations
Government applications
Small business Web sites
Non-profit and organizational Web sites
Community-based portals
School and church Web sites
Personal or family homepages