Features
WordPress
WordPress is a publishing system that allows you to easily create a complex blog, or web log, on your site. Written in PHP and supported by a MySQL database, WordPress offers intuitive administrative tools and sophisticated design features that make it easy to develop and integrate a personal or professional blog on your site.
Joomla
Joomla is one of the most powerful Open Source Content Management Systems on the planet. It is used all over the world for everything from simple websites to complex corporate applications. Joomla! is easy to install, simple to manage, and reliable.
Drupal
Drupal is a free software package that allows an individual or a community of users easily to publish, manage and organize a wide variety of content on a website. Drupal is easy to install, simple to manage, and reliable.
PhpBB
phpBB is a high powered, fully scalable, and highly customisable open-source bulletin board package. phpBB has a user-friendly interface, simple and straightforward administration panel, and helpful FAQ.
Elgg Social Networking System
Create your own social network, quickly and easily. Elgg allows you to take full advantage of the power of social technology with elegant, flexible solutions for organisations, groups and individuals.