MindNode is a simple mindmapping software Mac and it’s FREE. Mindmapping is a recommended tool for speed reading as well as other tasks such as brainstorming/think tank, holiday planning, moving home, buying homes, research, writing a book or a corporate report, project management in any environment (school, meeting, workplace, home, etc). The results can be exported in PNG, Tiff, PDF, RTF, HTML.
http://itunes.apple.com/gb/app/mindnode-free/id402397683?mt=12
