Kinopio - Thinking canvas for mind mapping, brainstorming, and moodboards
Sparkin - Idea management platform with creativity tools
Kanboard - Kanboard is a free and open source Kanban project management software.
Kindling - Kindling Software was developed by Spigit for the purpose of idea management and innovation in any organization or commercial entity.
Birabo - An effortless collaboration tool for teams
Yope - An idea-focused note taking app which extends your brain