Xmind - Xmind is a brainstorming and mind mapping application.
PlanBox - Finally an agile management tool all teams can share, whether Scrum-savvy or not.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Rever - Rever is an idea management platform that is built for companies and businesses related to food processing and packaging.
MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.
Sideways 6 - Sideways 6 is the best way to involve your employees in innovation.