I am running cardsorts, brainstorming, researching, using post it notes etc etc in order to develop a better IA schema on an internal knowledge base app. Any recommendations on tools that allow you to take those ahah moments or "maybe this will work" ideas and get them down on something better than scrawled notes and whiteboards. I am beginning to develop some facet classifications and would like a tool where I could record these, show the breakdown of the facets and objects within these and the relationships or not between the facets etc etc as I generate ideas. I have tried Excel but it means splitting up the information over multiple sheets since the IA is really three dimensional. Also I then spend more time figuring out how to capture my idea in Excel correctly then getting on with my research.