I like to use mindmaps for planning and concept work like this. Freemind is a good open source mindmap editor for the desktop. Or you could try my online, bro

I like to use mindmaps for planning and concept work like this. Freemind is a good open source mindmap editor for the desktop. Or you could try my online, browser-based mindmap app. http://thoughtmuse.com http://thoughtmuse.com ;)