A free and open source content-management framework
Drupal is an open-source CMS with a large community of users and developers furthering its development and supporting new features.
2. Drupal and the IndieWeb
There's a feature packed Drupal module for IndieWeb which ties in with services including Webmention.io and Bridgy. This way the module facilitates the display of, sending and receiving Webmentions such as for commenting on posts,replies and rsvps. It has features to allow other to login through the website and create content via Micropub. Content is created in Microformats