Flare by GoDaddy - Discover, give feedback and support startup ideas
Xmind - Xmind is a brainstorming and mind mapping application.
Generating Product Ideas - Find ideas for your next business or side project
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Wittycircle - Networking tool for entrepreneurs, makers and curious minds.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.