There are many solutions on the net for mind mapping software.
I have tried a few and the one that seems the simplest to use and has collaborative abilities and excellent exporting formats is Mind42.com. Manage all your ideas, whether alone, twosome or working together with the whole world – collaborative, browser-based and for free.
Using a mind map is a great way to build an org chart or brain storm an idea. It can even help create something as simple as a to-do list.

Mindmap Example
