Cool Application!

[AndreL]

FreeMind
A Java Program for creating and viewing Mindmaps
Taking the Concept-Mapping approach to Human-Computer Interface design.
A mind mapper, and at the same time an easy-to-operate hierarchical editor
with strong emphasis on folding. These two are not really two different
things, just two different descriptions of a single application. Often used
for knowledge and content management.

Home: http://freemind.sourceforge.net/

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About the concept of Mindmaps:
http://headrush.typepad.com/creating_passionate_users/2005/04/why_i_want_a_ta.html

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[benjaminq]

I can also add Kdissert for mindmapping.
http://www.kde-apps.org/content/show.php?content=12725&PHPSESSID=ef87d6f6db93866f25ec8a2184451abb

Benjamin

[AndreL]

Yes, I saw that one too but Freemind is crossplatform (Windows, Linux .deb and .rpm, and MAC).

kdissert has some cool feature, tho. Probably better for dissertation or long document, manual, book and the such.