Xmind - Xmind is a brainstorming and mind mapping application.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
MindNode - Delightful Mind Mapping for your Mac, iPad and iPhone. MacCapture Your Thoughts. Any idea starts with a loose collection of .
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.
FreeMind - FreeMind is a premier free mind-mapping software written in Java.