Drupal is an open source content management system (CMS) that competes with proprietary CMS platforms like Adobe Experience Manager and Sitecore. It is commonly seen as just for simple sites, but large enterprises like GE and NBC use Drupal for their most complex, global digital experiences. Drupal 8 includes new features like responsive design, mobile previews, and multilingual support out of the box. While some see open source as less secure or difficult to implement, Drupal powers many of the world's largest sites and its large community of developers provides extensive support options.