AngularJS is an open-source JavaScript-based front end web application framework. It is used in Single Page Application (SPA) projects which extend HTML DOM with additional attributes and makes it more responsive to user actions. It was licensed under the Apache License version 2.0. It was originally developed by Adam Abrons and Misko Hevery in 2009 and now, maintained by Google. The released latest version is 1.4.3.