Merge branch 'darol100-patch-1'

README.md

     - [Dependency Management Extras](#dependency-management-extras)
     - [Frameworks](#frameworks)
     - [Framework Extras](#framework-extras)
+    - [Content Management Systems](#content-management-systems-cms)
     - [Components](#components)
     - [Micro Frameworks](#micro-frameworks)
     - [Micro Framework Extras](#micro-framework-extras)
 * [Knp RAD Components](https://rad.knplabs.com/) - A set of Rapid Application Development (RAD) components for Symfony.
 * [Symfony CMF](https://github.com/symfony-cmf/symfony-cmf) - A Content Management Framework to create custom CMS.
 
+### Content Management Systems (CMS)
+*Tools for managing digital content.*
+* [Drupal](https://www.drupal.org) - An enterprise level CMS.
+* [WordPress](https://wordpress.org/) A blogging platform and CMS.
+* [Joomla](https://www.joomla.org/) - Another leading CMS.
+* [Concrete5](https://www.concrete5.org/) - A CMS targering users with a minimum of technical skills.
+* [BackdropCMS](https://backdropcms.org) - A CMS targeting small-to-medium sized business and non-profits (a fork of Drupal).
+
 ### Components
 *Standalone components from web development frameworks and development groups.*