List of Best JavaScript Frameworks?

AngularJS

AngularJS is an open source web application framework. It was originally developed in 2009 by Misko Hevery and Adam Abrons. AngularJS is now maintained by Google.

Backbone.js

BackboneJS is a lightweight JavaScript library that allows to develop and structure the client side applications that run in a web browser. It offers MVC framework which abstracts data into models, DOM into views and bind these two using events.

Ember.js

Ember.js is an open source, free JavaScript client-side framework used for developing web applications. Ember.js allows building client side JavaScript applications by providing a complete solution which contains a data management and an application flow.

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

Google Web Toolkit (GWT) is a development toolkit to create RICH Internet Applications (RIA). It provides developers option to write client side application in JAVA. GWT compiles the code written in JAVA to JavaScript code. Application written in GWT is cross-browser compliant. It automatically generates javascript code suitable for each browser. 

Knockout.js

KnockoutJS is basically a library written in JavaScript, based on MVVM pattern that helps developers build rich and responsive websites. The model separates the application's Model (stored data), View (UI) and View Model (JavaScript Representation of model).