Overmind
Overmind - Frictionless state management
Aura
A scalable, event-driven JavaScript architecture for developing widget-based applications. Works with Backbone.js and other frameworks.
Simplecart
A simple javascript shopping cart that easily integrates with your current website.
Postal.js
JavaScript pub/sub library supporting some advanced subscription features, plus message capture and replay
Webix
Stable releases of Webix UI - JavaScript library for building mobile and desktop web apps
Joosy
Joosy is a browser applications framework. That is based on Rails, CoffeeScript and love.
Hasher
Browser history manager for rich media websites
Gijgo
Gijgo - Free Javascript Controls
Uranium
Universal css-in-js media queries for React Native and React
Enyo
A JavaScript application framework emphasizing modularity and encapsulation
Somajs
Scalable javascript framework
Cycle Core
A fully reactive JavaScript framework for Human-Computer Interaction
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.
Director
a tiny and isomorphic URL router for JavaScript
Rill
:left_right_arrow: Universal web application framework.
Stimulus
A modest JavaScript framework for the HTML you already have
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