openKB - openKB is a Markdown Knowledge base application (FAQ) built with Nodejs and ExpressJS.

GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.

Raneto - Open source, flat-file Knowledgebase platform that uses static Markdown files

XWiki - A powerful Open Source collaborative platform enhancing collaboration and communication.

Flowtelic - Flowtelic is a unique approach to the Zettelkasten note-taking method which aims to bring a zero-inbox style approach to note-taking so you focus on building knowledge a...

Doxygen - Generate documentation from source code