Extension.svg from Wikimedia Commons, the free media repository
https://commons.wikimedia.org/wiki/File:GoogleMaps_logo.svg

InfoBubble
https://github.com/RelativeMedia/InfoBubble

Hogan.js
http://twitter.github.io/hogan.js/

jQuery
http://jquery.com/

Google map stubs
https://code.google.com/p/closure-compiler/source/browse/#git%2Fcontrib%2Fexterns%2Fmaps
