Tools:
moowheel
graphviz
processing
vvvv

JS Tools
raphaeljs
processingjs
protovis
d3js

http://www.visualizing.org/

http://visual.ly/

http://www.readwriteweb.com/archives/the_best_tools_for_visualization.php

datavisualization.ch

http://www.visualcomplexity.com/vc/blog/?page_id=7

http://www.rethinking-architecture.com/introduction-parametric-design,354/

http://www.wikiviz.org/wiki/Tools

https://digitalresearchtools.pbworks.com/w/page/17801661/Data%20Visualization

http://flowingdata.com/2009/09/03/what-visualization-toolsoftware-should-you-use-getting-started/

http://www.openframeworks.cc/

http://bost.ocks.org/mike/

http://www.tableausoftware.com