Joomla
joomla_logo 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.
Joomla is used all over the world to power Web sites of all shapes and sizes. For example:
WordPress
WordPress is a blog publishing system written in PHP. All data is stored in a MySQL database. WordPress is the official successor of b2\cafelog, developed by Michel Valdrighi. The name WordPress was suggested by Christine Selleck, a friend of lead developer Matt Mullenweg.
The latest release of WordPress is version 2.6.2, released on 08 September 2008. It is distributed under the GNU General Public License version 2.