Konva is an HTML5 Canvas JavaScript framework that extends the 2d context by enabling canvas interactivity for desktop and mobile applications.

A Mocha reporter, which extends the spec runner to display and (optionally) enforce blanket Code Coverage metrics

Web Framework that extends Tornado Web adding new features to the original framework.

INIT extends HTML5 Boilerplate, adds more structure for SCSS and JavaScripts files, includes build tasks and a whole lot more.

Code that extends pylearn2 in various ways

KineticJS is an HTML5 Canvas JavaScript framework that extends the 2d context by enabling canvas interactivity for desktop and mobile applications.

HTTPError class extends Error (stack in). var err = new HTTPError(req,res,message);

Extends Zend_Cache_Backend_Memcache with Tagging