Grav

Grav is a flat-file CMS written in PHP that keeps content as Markdown and YAML files in folders rather than rows in a database. Templating comes from Twig, while blueprints, a media manager, a command line package manager, and a plugin ecosystem let you build a site without writing a full application.

It suits documentation sites, small business pages, and blogs that benefit from being versioned in Git.

The service can it on your own infrastructure, where the content is plain files you can diff, copy, and restore with no database migration and no SaaS subscription attached.