Vector graphics scripting framework that runs on top of the HTML5 Canvas. It offers a clean Scene Graph / Document Object Model and a lot of powerful functionality to create and work with vector graphics and bezier curves.

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First released 2013
Developed by Jürg Lehni, Jonathan Puckey
Open-source Yes
Used by New York Times, Foursquare

Interesting facts

Four Square uses Paper.js to allow their users to visually relive their check-in history.


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