Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Clover Sites - Clover Sites is a powerful, intuitive, and affordable content management system and website builder that enables you to create your online presence within no time.
ClassicPress - The WordPress fork. No Gutenberg. Great future!
Rocketspark - Rocketspark is an online website builder that allows you to have a website in just minutes that is fully optimized for search engines.
TYPO3 - TYPO3.com - Infos, SLAs, Extended Support Versions and more
Moto CMS - Build your own website in minutes! MotoCMS is a cheap and easy website builder with simple functionality, visual editor and 24-7 support. Try it free today!