Compare Kunstmaan vs. Pimcore
Kunstmaan Agency has created a number of Symfony2 Framework Bundles to enable developers to create web applications with CMS features. It's not a complete product in itself, but offers flexibility for skilled developers to create easy to use site experiences for content creators.
Pimcore is a CMS whose development started in 2009. Originally the Content Management System was built on the Zend PHP Framework, but the system will switch to the Symfony full stack framework.
CMSes vailable for comparison: BackBee, Bolt CMS, Concrete5, Contenta, Contentful, Cosmic.js, Craft CMS, Drupal 8, eZ Platform, Fork CMS, GraphCMS, Grav, Jarves, Joomla!, Kunstmaan, October CMS, Open Orchestra, Pagekit, Pimcore, PyroCMS 3, Reservoir, Spress, Sulu CMS, Symfony CMF, Symphony CMS