Drupal is probably next in line for popularity. Although it is probably more known amongst the more technical advanced users. Even though Drupal is free, you will still need to have your own hosting.
Major League Soccer is one of the real world examples of Drupal. You can visit it at https://www.mlssoccer.com/.
Some of the major features of Drupal are…
- Security
- Multilingual
- Accessibility
- Content Authoring
- Personalization