Compare Grav vs. TYPO3
Grav is a fresh flat-file database which is easy to install. It uses a number of Symfony components and is very fast to get started with.
Typo3 is an established enterprise grade CMS built on PHP. In the past years they have struggled in their renewal project, but have since moved forward with Symfony components.
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