Dozerjs
Foundational Framework for NodeJS Web Services
Ripple
A tiny foundation for building reactive views
Across Tabs
Easy communication between cross-origin browser tabs
Google Closure Library
git-svn mirror of Google's Closure Library.
Tweet
put twitter on your website with tweet, an unobtrusive javascript plugin for jquery
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
LABjs
Loading And Blocking JavaScript: On-demand parallel loader for JavaScript with execution order dependencies
Js Cache
jsCache is a javascript library that enables caching of javascripts, css-stylesheets and images using my localStorage polyfill. This is especially useful when serving your website for mobile phones, which have limited HTTP caching available, but also speeds up your site in an ordinary web browser as it saves HTTP requests and loads all files asynchronously.
YUI3
YUI is a free, open source JavaScript and CSS library for building richly interactive web applications.
Stapes
a (really) tiny Javascript MVC microframework
Queue
Yet another asynchronous helper library for JavaScript. 387 bytes minified and gzipped!
Platform.js
A platform detection library that works on nearly all JavaScript platforms.
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.
Knockout Projections
Knockout.js observable arrays get smarter
Ect
Fastest JavaScript template engine with embedded CoffeeScript syntax
Curl
A small, fast module and resource loader with dependency management. (AMD, CommonJS Modules/1.1, CSS, HTML, etc.)
Backbone.stickit
Backbone data binding, model binding plugin. The real logic-less templates.