Main Blog Picture - Drupal AgencyThere are almost a million websites built on Drupal. The websites built on Drupal are growing ever bigger. In fact, Drupal is the main CMS contender if you want to build a big website and don't want to use expensive proprietary platforms. Website generators, headless CMSes and Digital Experience Platforms architected by massive corporations, all are built on Drupal. Drupal, however, is a complex framework.