Mind Mapping

Exploratree - Multiple mind mapping tools - http://www.exploratree.org.uk/
Mind42.com - Mind mapping - http://mind42.com
Mind Omo - Thought mapping tool to organize information - http://phet.colorado.edu/en/simulations/category/new
Trailfire - Mind mapping tool - **http://trailfire.com/kmoliver/marks/54364**