Mambo is a PHP-based Open Source CMS. Mambo is both easy to use
at the entry level for creating basic websites, while having the
power and flexibility to support complex web applications.
Mambo implements the core requirements of a full featured CMS. It has a powerful and extensible templating system with the ability to upload and manage many different data types. User access control, content approval, rich administrative control, content display scheduling are all built-in. New features and extensions are constantly added to the core system, with many more being available and supported by the community.
Most of the Mambo development team now works on a fork of Mambo known as Joomla. Mastering Mambo is fully compatible with Joomla's 1.0 release.