Javascript Visualization tools/APIs

Here are a couple good resources for Javascript Visualization:

• http://shelaghjoyce.visibli.com/share/aL0r1J : Data Visualization tools for developers (some of the links below are included on this one)
• http://d3js.org/ 
• http://mbostock.github.com/protovis/ (not maintained anymore)
• http://processingjs.org/
• https://developers.google.com/chart/
• https://developers.google.com/chart/interactive/docs/gallery/annotatedtimeline
• http://code.google.com/apis/ajax/playground/?type=visualization