Grav

Grav is an easy to use, yet powerful, opensource CMS that requires no database. In a nutshell, installing Grav is a matter of unzipping the file. It is fast, has sophisticated caching, and a light footprint for optimal performance. Content is just simple markdown files in folders, with no complicated databases to deal with. A powerful API and extensive hooks allow for plugins to extend Grav. Flexible Twig templating allows easy realization of your designs.