CKEditor - Real-time collaborative future-ready rich text editor
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Aloha Editor - Aloha Editor is an HTML5 WYSIWYG Editor that gives you a total new experience when editing.
MkDocs - Project documentation with Markdown.
ContentTools - A small & beautiful WYSIWYG editor for HTML content.
Docusaurus - Easy to maintain open source documentation websites