Novius OS - Novius OS is a Cross-Channel Open Source content management system (CMS).
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
NemakiWare - NemakiWare is an Open Source CMIS-compliant platform for document management.
ClassicPress - The WordPress fork. No Gutenberg. Great future!
xPud - A Browser OS with an App Store - The desktop has never been this easy -- Get your favorite web...
Textpattern - Textpattern is an elegant content management system that is free, open source software.