Backdrop CMS is a content management system created from a Drupal fork. The open source software is suitable for the creation and maintenance of various websites. The functions can be extended with the help of various add-ons and modules, so that you can realize numerous individual requirements. With the SMS module from sms77, for example, it is possible to send SMS with Backdrop.
An active community is continuously developing Backdrop and is guided by a project management team. The focus in development is always on the usability and flexibility of the content management system.