Freeplane: Solid Mind Mapping but You May Need a Map
Freeplane is an application for creating mind maps. A mind map is the doodling you draw with shapes and other symbols around words connected with lines to make charts representing your thoughts and ideas on a particular topic or project.
I rarely find tasks that seem easier to do the old fashioned way with paper and pencil than on a computer screen. But creating a mind map with Freeplane comes close.
It is a bit cumbersome to learn and is less intuitive than other mind-mapping gear I have used.