Known : Known is a social learning platform.
Create your educational community and empower students to publish work, share feedback, and communicate across so...
Ponzu : Ponzu is a powerful and efficient open-source HTTP server framework and CMS. It provides automatic, free, and secure HTTP/2 over TLS (certificates obt...
TYPO3 : TYPO3 is an enterprise-class, Open Source CMS (Content Management System), used internationally to build and manage websites of all types, from small ...
GetSimple CMS : GetSimple is an XML based, stand-a-alone, fully independant and lite Content Management System.
Apostrophe is a content management system designed for maximum flexibility with a minimal learning curve.
The interface is ergonomic. All content editing is performed in context.
And it's open source, so you can contribute.