A very basic comparison of some of the JavaScript MVC libraries

The table below is not complete, but it should serve the purpose of striking out the unsuitable ones. For other comparisons please see these:

• Client Side MVC Shootout
• Client-Side MVC frameworks compared
• The Top 10 Javascript MVC Frameworks Reviewed

Name	Pros	Cons	Notes
Backbone.js	included in npm index widely used has Knockback for Knockout.js ideas		4.6kb started on September, 2010 has 1486 tags on StackOverflow depends on Underscore optionally depends on Zepto or jQuery, json2.js
Ember.JS	included in npm index developed by the authors of the famous SproutCore	infrastructure uses Ruby	35kb no dependencies
Knockout		excluded from npm index	13kb implements Model View ViewModel pattern started on July, 2010 has 638 tags on StackOverflow no dependencies
Spine	included in npm index	written in CoffeeScript	3.2k started on March, 2011 depends on Zepto or jQuery
ExtJS	included in npm index	non-free for commercial projects	56k, modular no dependencies
fidel	included in npm index slim	only a controller last updated on November, 2011	1.7k depends on Ender or Zepto or jQuery
Spry		last updated in 2008 excluded from npm index	216k, modular no dependencies
MDV	authored by Google and Chromium developers	experimental excluded from npm index	108k, modular no dependencies
JavaScriptMVC		forces file system structure excluded from npm index	??, modular no dependencies
YUI Library	included in npm index		??, modular has 1019 tags on StackOverflow no dependencies
Sammy.js		uses hashbangs for routing excluded from npm index infrastructure uses Ruby	104k, modular started on March, 2009 depends on jQuery
AngularJS		uses xml namespaces excluded from npm index	27k no dependencies
Agility.js	slim	excluded from npm index	4k depends on jQuery

So the real candidates are Backbone.js, Knockout.js, YUI, Spine, Ember.js and Sammy.js. Apparently, the winner is Backbone.js. yay

But there are also countless other comparisons, for example:

• Addy Osmani: Short Musings On JavaScript MV* Tech Stacks
• Quora: Can we get a poweredby list of ember.js (sproutcore), javascriptmvc, backbone.js individually?
• Knockback brings Knockout.js magic to Backbone
• Hacker News: Sproutcore vs jQuery +backbone.js
• Hacker News: Backbone.js 0.5.0 Released (with pushState)
• Hacker News: Backbone vs Knockout
• StackOverflow: Knockout.js vs Backbone.js (vs ?) (closed)
• How to use Model-View-Controller (MVC) by Steve Burbeck, Ph.D.
• Understanding MVC And MVP (For JavaScript And Backbone Developers)

UPDATES

Frameworks that were created after writing the comparison above:

• Serenade.js