Information Organization Applications:
http://www.thebrain.com/
http://www.xanadu.net/zigzag/
http://everything.blockstackers.com/
http://crit.org/
http://www.olivebr.com/pilot.htm
http://web.singnet.com.sg/~axon2000/index.htm
http://www.correlate.com/
http://www.mindman.com/
http://www.merzcom.com/
http://www.mirrorworlds.com/products/topSight/topSight.html
http://www.thinkmap.com/
http://www.cybergeography.org/atlas/info_spaces.html
http://c2.com/cgi/wiki?WelcomeVisitors
http://209.181.77.58:8080/openidea/
http://www.multicentric.com/
http://www.irpeacs.fr/~zeiliger/nestor.htm
http://www.cobase.cs.ucla.edu/index.html