Backbone.js Developer(s) Jeremy Ashkenas Initial release October 13, 2010 (2010-10-13) Stable release 1.3.3 / April 5, 2016 (2016-04-05)[1] Repository https://github.com/jashkenas/backbone/ Development status Active Written in JavaScript Operating system Cross-platform Size 7.5 KB production 72 KB development Type JavaScript library License MIT Website backbonejs.org