AngularJS is an open source web application framework. It was originally developed in 2009 by Misko Hevery and Adam Abrons. It is now maintained by Google.
The original name of Ember.js was SproutCore MVC framework. It was developed by Yehuda Katz and initially released on in December 2011. The stable release of Ember.js is 2.10.0 and this was released on November 28, 2016.
Google Web Toolkit