I have been using Freemind a number of years for mind mapping.
It appears a bit rough and technical. It has much more features than xmind, but xmind has a more slick interface.
Sreen dump:
Apparently Xmind has become open source. Please check this link for more information.
I have not been using Xmind as long as for example Freemind, but what I like a lot is the striking interface. It is much more slick than Freemind.
The tool itself has less features than Freemind, but the interface and the slick printouts make up for that!
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