Graphite is LGPL. 
Copyright 2010-2012 University of Southampton and Christopher Gutteridge.
Homepage: http://graphite.ecs.soton.ac.uk/
Github: https://github.com/cgutteridge/Graphite

Icons in prettyLink example by Yusuke Kamiyamane. All rights reserved. Licensed under a Creative Commons Attribution 3.0 License. http://p.yusukekamiyamane.com/
