Mind map / flowcharts with automatic layouts that work
yworks.com
yworks.com
I waste zero time re-organizing as I create charts, so I don't lose thoughts while trying to make sure the boxes are organized.
TIPS:
* F2 - change the caption on your shape
* F6 - update properties of the shape/connector
* Layouts - experiment with clustering to get cool insights!
It is an option which may or may not fit the varying needs of readers of HN, just as draw.io is.