Drupal is an amazing open source software. It is an enterprise-class with scalability, flexibility, reliability, manageability, security, and availability resources. It also has an extensive API support, Facebook Twitter, Google Apps, Google Analytics, can all be easily integrated. It is another content management system (CMS), and it can be compared to WordPress and Joomla. Drupal powers millions of websites and application, and is supported by an active and diverse community of people around the world.