Thank you for your interest in Jotup!
The main platform is almost ready to go, but we're still working on its collaborative note-management front end.
In the meantime, you can try Jotup through Slack, Jot/Bot. It provides a complete implementation of the News subsystem, as well as a few other features, all of which run on the main Jotup backend, demonstrating its ability to work with multiple interfaces.