Content management systems (CMS) comes in all shapes and sizes, with a wide variety of features. Most of them offer an interface for editing content and manage settings for one or multiple connected websites, and most of them are collaborative in nature.
The most popular CMS for managing websites is WordPress, which as of 2018 holds about 30% of the market share. Other popular CMSs include Joomla, Drupal and the e-commerce system Magento, although none of them come close to WordPress in market share.