Drupal

We first built sites with Drupal, a leading open-source CMS, in 2005 using Drupal 3.  We now often recommend Drupal for large, complex websites that require extensive customization and enterprise-level security and support.


Now at version 8, the platform and contributed modules continue to have no licensing fees and provide well-tested features, such as advanced taxonomy, template-based WYSIWYG editing, advanced search, sorting and filtering, user account profiles, e-commerce, user permission management, weekly security updates, RSS, and API integration capabilities.

These features and the large international community that contributes and supports Drupal, including Acquia, make it well suited for large websites.