Xmind - Xmind is a brainstorming and mind mapping application.

Flare by GoDaddy - Discover, give feedback and support startup ideas

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.

MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.

Generating Product Ideas - Find ideas for your next business or side project