https://yad7.org/

YAD7 is a open-source content-management system (CMS) that is fully compatible with Drupal 7. There is no planned end of life for YAD7.
Moving the Drupal 7 platform forward
YAD7 is a community response for long-term support and improvement of the Drupal 7 platform. Unlike other Drupal 7 forks that require website restructuring, YAD7 is an almost-direct mirror of Drupal 7 and it is kept up-to-date with the latest Drupal 7 security updates. This means that if you have an up-to-date Drupal 7 site, you can migrate to YAD7 with no changes.