Just discovered Free mindmapping software (Stereochemistry)

This is so cool.  I have just discovered mind mapping free software.  I made this map in Edraw mindmap (freeware).  I think the mind maps are much more interesting to look at and study from than a list of definitions!!
On my previous post I used bubbl.us which allows 3 free mindmaps before you have to pay for your account.   The bubbl.us seems slightly easier to control but has less options for shapes, arrows etc.
I used the free MarvinSketch software to draw the chemical drawing.