The Joomla content management is extremely popular due to its comparitive ease-of-use and enormous flexibility. Along with this popularity comes a huge community of knowledgable Joomla users, many of whom give of their time and energy freely to help others make the most of Joomla. The product is under active development, and has consistently managed to keep abreast of improvments in technology to provide one of the most robust, secure, and feature-rich CMSs in existence - and it's free!
Joomla boasts the following features:
A large and active user and developer community.
Provides a basic level of content approval for registered users.
Online help.
Page caching mechanism to improve performance on busy sites.
