Docusaurus - Easy to maintain open source documentation websites
SourceForge - The Complete Open-Source and Business Software Platform.
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
openDesktop.org - The website openDesktop.
Fix All Conflicts - Easy-to-use CUI for fixing git conflicts
OSOR - OSOR is the Open Source Observatory, a project to provide a framework for developing and executing autonomous observations.