Spinscape is an exciting, dynamic web application for mind mapping and visual collaboration.

You can create interactive maps that allow you to organize the huge volumes of information and data you’re faced with daily. Upgrade to Premium and you can allow others to brainstorm with you, edit the map and even chat as you’re creating it! It’s a completely new way of discovering, managing and sharing information by enabling people to collaborate over the web in real time.

http://www.spinscape.com/