- rgbcolor.js (Public Domain)
- strftime.js (BSD License)
- excanvas.js (Apache License)
- - FlashCanvas (MIT License)
- YUI compressor (BSD License)
rgbcolor: http://www.phpied.com/rgb-color-parser-in-javascript/
strftime: http://tech.bluesmoon.info/2008/04/strftime-in-javascript.html
excanvas: http://code.google.com/p/explorercanvas/
yui compressor: http://developer.yahoo.com/yui/compressor/
-flashcanvas: http://flashcanvas.net/
dygraphs is available under the MIT license, included in LICENSE.txt.