For support or to purchase a license:
http://www.brushpilotapp.com

Thanks to the following for their code:

• Martin Knoblauch R., for avl_array
• Uli Kusterer, for UKKQueue
• Andy Matuschak, for Sparkle
• Chad Weider, for CTGradient
• Jonathan Dann, for ESScroller
• boost.org