I have been searching for a mind map tool that uses a non hierarchical approach and I found nothing useful.
For example XMind is even trying to sabotage my non hierarchical attempts. Every time I move two free floating nodes too close together it makes one child of the other. Very frustrating!
The most useful thing I found until now is Bubbl.us, but it doesn't look nice and doesn't really help with layout or anything. I might as well draw one by hand.
- non sabotaging environment to non hierarchical mind maps
- free (but if it's really good looking and does what I want I would pay for it)
- auto arrangement (imagine I just want to write down 20 keywords, tell each one of them what other nodes it shares a connection with and BAM everything arranges itself in a nice cloud)