Kinopio - Thinking canvas for mind mapping, brainstorming, and moodboards
Kanboard - Kanboard is a free and open source Kanban project management software.
ScatterNote - A note-taking app for networked thought
Excalidraw - Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.
WBO - Realtime collaborative whiteboard
Miro - Scalable, secure, cross-device and enterprise-ready team collaboration tool for distributed teams. Join 2M+ users & 8000+ teams from around the world.