If you’re not a beginner or novice developer then you’re well aware of Web Application Frameworks. You’re also well familiar with popular JavaScript frameworks; AngularJS, Ember, KnockoutJS and Backbone. The JavaScript framework provides structure to your code and helps to keep it organized. They save your precious time as they’re built with jQuery, the most used and popular JavaScript library.

However, choosing right JavaScript framework isn’t easy as we think. It’s just not like to pick between four-coloured of clothes, it’s more like to select between four completely different clothes: Each helps to cover you, but they all function and look very differently. Actually, you would not wear a bathing dress in a cold climate, or a winter coat at the beach. Likewise, different JavaScript frameworks are better for different types of applications.

Here in this article, I have a detailed explanation of each of the four top JavaScript Frameworks, and what they’re best for:


AngularJS was originally developed in 2009, is the oldest of the four frameworks. Due to this, it has largest community and has largest number of contributors. It is maintained by Google and a community of individual developers.

JavaScript Web Application Framework

The AngularJS implements the MVC pattern to separate presentation, data, and logic components. Using dependency injection, Angular brings traditionally server-side services, such as view-dependent controllers, to client-side web applications. Consequently, much of the burden on the server can be reduced. That’s why you can see many news sites that using AngularJS on their front pages, like the Guardian, the Huffington Post, and MSNBC.

AngularJS also has some specific features that no other JavaScript solution does. The websites developed using AngularJS are good at making quick changes than any other framework. The developers can easily create testable code and test it often to catch little coding errors before they become big ones. AngularJS is well suited from single page web app to big Web Application by utilize its data-binding feature.


Backbone was initially released in 2010, just after AngularJS. It also has very large community same as AngularJS. It’s a popular lightweight JavaScript framework based on the model–view–presenter (MVP) and Actor model application design paradigm.

JavaScript Web Application Framework

Becuase of its lightweight and very small download size compared to other frameworks, much popular application uses the Backbone framework including Twitter, Foursquare, Digg, Hulu, and LinkedIn Mobile. Also many music apps developed using Backbone like Soundcloud, Pitchfork, Pandora and more.

Backbone depends on only one JavaScript library instead of several that make it fast loading, means good for building fast and responsive applications. It also more effective if web application is small and single page design or only part of page. If you’re working on a single-page application or widget, Backbone is likely the best framework for you.


Knockout was developed and is maintained as an open source project by Steve Sanderson, a Microsoft employee. It is initially released in 2010. The framework has great documentation and includes features like declarative bindings, automatic UI refresh, dependency tracking and templating. The popular website build using KnockoutJS are jsfiddle, amctheatres, amctheatres, amctheatres and komplett.

JavaScript Web Application Framework

KnockoutJS is better suited for smaller projects. You can also build very large, complex, and well structured applications. But you have to provide all of the structure beyond data binding and models.


Ember is a growing JavaScript framework, initially released in 2011. The framework has very strong support network with many built-in support for standard code features.

JavaScript Web Application Framework

Ember is also a very lightweight and fast loading. This is reason, many well known web applications adopted Ember like LivingSocial, Groupon, Zendesk, Discourse, and Square. Ember creators Tom Dale and Yehuda Katz say it’s easy to see when a site is using Ember because of its loading speed.

So if you’re only trying to create small widget or single page app, it might be overkill for you. It is awesome if you’re developing multipage, navigational, long-term projects.

When discussing these top four JavaScript frameworks, it becomes clear that different applications and different needs make each framework to show its best.