FastCDN

FastCDN is a high-speed and globally available content distribution network for the most popular, open-source libraries.

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Underscore.js

Underscore.js is a JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects. It’s the answer to the question: “If I sit down in front of a blank HTML page, and want to start being productive immediately, what do I need?” … and the tie to go along with jQuery's tux and Backbone's suspenders.

underscorejs.org

Version 1.8.3