Development toolkit for building and optimizing complex browser-based applications. Its goal is to enable productive development of high-performance web applications without the developer having to be an expert in browser quirks, XMLHttpRequest, and JavaScript.

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First released 2006
Developed by Bruce Johnson, Joel Webber
Latest stable version 2
Open-source Yes
Used by Google AdWords, Orkut, Google Wallet, AdSense, Flights, Hotel Finder, Offers, Blogger.

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