Thanks to Marcia Connor for pointing out this Periodic Table of Visualization Methods (via a long chain of retweets). I was explaining to someone the other day about Mind Maps, and how they’re a particular type of visualization technique. There are even special-purpose programs that you can use to make some of these diagrams.

For basic diagramming needs, I use OmniGraffle on my Mac Powerbook, and I love it. For WIndows users unaccustomed to such things, it’s a lot like Visio.