Mousetrap
Simple library for handling keyboard shortcuts in Javascript
Layr
Dramatically simplify full‑stack development
History.js
History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for data, titles, replaceState. Supports jQuery, MooTools and Prototype. For HTML5 browsers this means that you can modify the URL directly, without needing to use hashes anymore. For HTML4 browsers it will revert back to using the old onhashchange functionality.
Flux
Application Architecture for Building User Interfaces
Node Decorators
node-decorators
Vue I18n
:globe_with_meridians: Internationalization plugin for Vue.js
Rivets
Declarative data binding facility
Visibility.js
Visibility.js allows you to determine whether your web page is visible to a user, is hidden in background tab or is prerendering. It allows you to use the page visibility state in JavaScript logic and improve browser performance by disabling unnecessary timers and AJAX requests, or improve user interface experience (for example, by stopping video playback or slideshow when user switches to another browser tab).
Qooxdoo
A Universal JavaScript Framework
Csso
CSS-optimizer
Winjs
WinJS project by Microsoft Open Technologies
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.
Loopback
LoopBack makes it easy to build modern applications that require complex integrations.
Fluxible
A pluggable container for isomorphic flux applications
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
Layzr.js
A small, fast, modern, and dependency-free library for lazy loading.