Backdrop is a free, open-source Content Management System (CMS) used by small and mid-sized businesses to publish and manage their online content. It enables users to create a variety of websites that are customize-able. It's based on Drupal CMS, and shares most of its features, with improvements. Some important features are: * Browse and install add-ons directly from your website. * Integrated security for granular access control. * A robust modifiable API to change functionality. * Configurati......