impress.js : It's a presentation framework based on the power of CSS3 transforms and transitions in modern browsers and inspired by the idea behind prezi.com
Ember.js : A JavaScript framework for creating ambitious web applications
RAWGraphs : RAW is an open web tool to create custom vector-based visualizations on top of the amazing d3.js library.
Primarily conceived as a tool for designers ...
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yepnope.js : A Conditional Loader For Your Polyfills!
Namespace.js is a small javascript script which provide namespacing utilities. It is framework independent. It also allows you to remotely include files.