A content management system (CMS) is a computer application used to create, edit, manage, search and publish various kinds of digital media and electronic text.

CMSs are frequently used for storing, controlling, versioning, and publishing industry-specific documentation such as news articles, operators' manuals, technical manuals, sales guides, and marketing brochures. The content managed may include computer files, image media, audio files, video files, electronic documents, and Web content. These concepts represent integrated and interdependent layers.

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.

Magento: Magento is a new professional open-source eCommerce solution offering unprecedented flexibility and control. Magento was designed with the notion that each eCommerce implementation has to be unique since no two businesses are alike. Magento's modular architecture puts the control back in the hands of the online merchant and places no constraints on business processes and flow.

Wordpress: WordPress is a state-of-the-art semantic personal publishing platform with a focus on aesthetics, web standards, and usability. More simply, WordPress is what you use when you want to work with your blogging software, not fight it.

Drupal: Drupal is software that allows an individual or a community of users to easily publish, manage and organize a great variety of content on a website.

PHPBB: phpBB is a high powered, fully scalable, and highly customizable Open Source bulletin board package. phpBB has a user-friendly interface, simple and straightforward administration panel, and helpful FAQ.