Alloy Ui
Alloy is a UI metaframework that provides a consistent and simple API for building web applications across allthree levels of the browser: structure, style and behavior.
Dojo
Dojo saves you time and scales with your development process, using web standards as its platform. It’s the toolkit experienced developers turn to for building high quality desktop and mobile web applications.
Sammy
Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
Chaplin
An Application Architecture Using Backbone.js
Enyo
A JavaScript application framework emphasizing modularity and encapsulation
Cerebral
A state controller with its own debugger
Remote Storage
Client-side Javascript library to make apps compatible with a remote storage.
Postal.js
JavaScript pub/sub library supporting some advanced subscription features, plus message capture and replay
Sproutcore
JavaScript Application Framework - JS library only
Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Nuclear Js
Reactive Flux built with ImmutableJS data structures. Framework agnostic.
Aura
A scalable, event-driven JavaScript architecture for developing widget-based applications. Works with Backbone.js and other frameworks.
Durandal
A cross-device, cross-platform client framework written in JavaScript and designed to make building Single Page Applications (SPAs) easy to create and maintain.
Bootstrap.native
If you are looking for Bootstrap without jQuery or vanilla Javascript for Bootstrap, this is the place to get started.
Jsblocks
Better MV-ish Framework
Pencilblue
Full stack online publishing and CMS for Node.js
Datacamp Light
Convert any blog or website to an interactive learning platform for data science