Obsidian.md - A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
TiddlyRoam - An open source non-hierarchical notebook.
MkDocs - Project documentation with Markdown.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Docusaurus - Easy to maintain open source documentation websites