GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Miro - Scalable, secure, cross-device and enterprise-ready team collaboration tool for distributed teams. Join 2M+ users & 8000+ teams from around the world.
MkDocs - Project documentation with Markdown.
Conceptboard - Instant Whiteboards for Teams & Projects
Docusaurus - Easy to maintain open source documentation websites
OpenBoard - The OpenBoard software is an interactive white board software.