Recommended to me by a friend, simple easy to use mind mapping software and free too.
http://freemind.sourceforge.net/
other software (haven’t tried any yet)
- brainstorming made simple; free & online; http://www.bubbl.us/
- conzilla: open source concept browser, has UML templates by default; http://www.conzilla.org/wiki/Overview/Main
- Cmap tool: free for individual use; http://cmap.ihmc.us ; has a server version too
Posted by karthik 
