Xmind - Xmind is a brainstorming and mind mapping application.
Handle - Your workflow companion seamlessly integrated w/ Google Apps
MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.
Proud for Mac - Break down tasks & boost your productivity
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Offen - A fair alternative to common web analytics tools