Mind map

 

A mind map is a diagram used to visually organize information. A mind map is often created around a single concept, drawn as an image in the center of a blank landscape page, to which associated representations of ideas such as images, words and parts of words are added. Major ideas are connected directly to the central concept, and other ideas branch out from those.

FreeMind ( application)  allows the user to edit a hierarchical set of ideas around a central concept

Exemple

Created with freemind