Fishbone.js
A super lightweight (½kb) JavaScript library with automatic method chaining, automatic context binding, event support and simple inheritance. c-{{{-<
Batman
Fighting Crime and Kicking Apps
Uranium
Universal css-in-js media queries for React Native and React
Redux Elm
The Elm Architecture in JavaScript http://salsita.github.io/redux-elm/
Aurelia Framework
The aurelia framework brings together all the required core aurelia libraries into a ready-to-go application-building platform.
Flux
Application Architecture for Building User Interfaces
Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Javascript State Machine
A finite state machine javascript micro framework
Chaplin
An Application Architecture Using Backbone.js
Sails
Realtime MVC Framework for Node.js
Foundation
The most advanced responsive front-end framework in the world. Quickly create prototypes and production code for sites and apps that work on any kind of device.
Montage
Core framework: Montage simplifies the development of rich HTML5 applications by providing modular components, real-time two-way data binding, CommonJS dependency management, and many more conveniences. Join us on irc.freenode.net#montage or https://groups.google.com/d/forum/montagejs
Loopback
LoopBack makes it easy to build modern applications that require complex integrations.
Framework7
Full Featured HTML Framework For Building iOS & Android Apps
Famous
Famo.us is a powerful JavaScript framework designed to build rich, interactive web applications. It is the only framework that provides an open source 3D layout engine fully integrated with a 3D physics-based animation engine that can render to DOM, Canvas, or WebGL. Famo.us is currently in public beta.
Winjs
WinJS project by Microsoft Open Technologies
Director
a tiny and isomorphic URL router for JavaScript