visualization tools

Great resource - all the open source tools - https://dataviz.cafe

Network graph / Mind map

Winners:

Also great library of components/graphs, $995/yr per developer -

Free:

Simple but effective word-based network graphs - http://getspringy.com
Nice network graphs - examples - https://onodo.org/visualizations/6398
Fancy beautiful radial graph (slow to animate) - http://philogb.github.io/jit/static/v20/Jit/Examples/RGraph/example1.html