On-line Library of Information Visualization Environments (OLIVE):
http://otal.umd.edu/Olive/

An Atlas of Cyberspaces:
http://www.cybergeography.org/atlas/atlas.html

EVL: Electronic Visualization Laboratory (UIC):
http://www.evl.uic.edu/EVL/index.html

Open DX Gallery:
http://www.opendx.org/

Graphics, Visualization and Usability Center (Georgia Tech):
http://www.cc.gatech.edu/gvu/