Joosy
Joosy is a browser applications framework. That is based on Rails, CoffeeScript and love.
Mout
Modular JavaScript Utilities
JavascriptMVC
Develop with direction! With CanJS, jQuery++, FuncUnit, Steal, DocumentJS.
Aura
A scalable, event-driven JavaScript architecture for developing widget-based applications. Works with Backbone.js and other frameworks.
Jquery Timeago
Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago").
Hydra.js
Create a scalable, maintainable and module oriented system using Hydra.js
UA Parser
Lightweight JavaScript-based User-Agent string parser. Supports browser & node.js environment. Also available as jQuery plugin.
Radio
Dependency-free Chainable Publish/Subscribe Library for Javascript
Steal
Gets JavaScript
Supermodel
Supermodel - Minimal Model Tracking for Backbonejs
Bootstrap Ajax
A library for adding declarative ajax functionality to your website
Jsviews
Interactive data-driven views, built on top of JsRender templates
Canjs
Can do JS, better, faster, easier.
Jsface
Small, fast, elegant, powerful, and cross platform JavaScript OOP library. Support main(), singleton, super call, private, mixins, plugins, AOP and more.
Alertify.js
JavaScript Alert/Notification System
Lucid Js
LucidJS is a chainable event emitter library. It offers several unique features such as set events, emitter piping, DOM node encapsulation, sub events, along with the usual event triggering and binding. LucidJS emitters also feature meta events that allow listening for event binding and event triggering. LucidJS works in both the browser and node.js.
Jquerypp
jQuery's missing utils and special events