Ember.js is an open-source JavaScript application framework, based on the model-view-controller (MVC) pattern. It allows developers to create scalable single-page web applications by incorporating common idioms and best practices into the framework.

 

Ember is used on many popular websites, including Discourse, Groupon, Vine, Live Nation, Nordstrom, and Chipotle. Although primarily considered a framework for the web, it is also possible to build desktop and mobile applications in Ember. The most notable example of an Ember desktop application is Apple Music, a feature of the iTunes desktop application.

From the beginning Ember was designed around several key ideas: Focus on ambitious web applicationsEmber sets out to provide a wholesale solution to the client-side application problem. This is in contrast to many Javascript frameworks that start by providing a solution to the V in MVC, and attempt to grow from there. More productive out of the boxEmber is one component of a set of tools that work together to provide a complete development stack. The aim of these tools is to make the developer productive immediately. For example Ember CLI, provides a standard application structure and build pipeline. It also has a pluggable architecture and over fifteen hundred addons to enhance and extend it.Stability without stagnationThis is the idea that backward compatibility is important and can be maintained while still innovating and evolving the framework. Future web standards foresightEmber has been an early adopter and pioneer of many standards around Javascript and the web including promises, web components and ES6 syntax. Yehuda Katz, one of Ember's cofounders, is a member on TC39, which is the committee responsible for future versions of the Javascript language. 

 

Like Ruby on Rails, Ember follows Convention over Configuration (CoC), and the Don't Repeat Yourself (DRY) principle. It is a highly opinionated framework that provides good defaults and cultivates shared abstractions so developers are free to focus on bigger and better ideas.