Twitter Bootstrap - responsive grid, UI components
AngularJS - 'HTML enhanced for web apps', productive MVC framework
Backbone.js - library code & structure for web-apps
D3 - data visualiation for the web
Modernizr - feature detection for HTML5 and CSS3
We've already included jQuery, Bootstrap and Modernizr in this index.html - copy it, replace this blurb with your code, and you're set.
If you want to use the other libraries you can find their dependencies commented out at the bottom of this file.