Drupal

Drupal is an open source content management system (CMS) powering millions of websites and applications. It’s built, used, and supported by an active and diverse community of people around the world. Drupal is distributed under the terms of the GNU General Public License (GPL), which means anyone is free to download it and share it with others. Thie open development model means that people are constantly working to make sure Drupal is a cutting-edge platform that supports the latest technologies that the Web has to offer.