Jquerypp
jQuery's missing utils and special events
Refluxjs
A simple library for uni-directional dataflow application architecture inspired by ReactJS Flux
Node Browserify
browser-side require() the node.js way
Inject
AMD and CJS dependency management in the browser
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.
Jwerty
Awesome handling of keyboard events
Egjs
Set of UI interactions, effects and utilities components library using jQuery.
Backbone Layout Manager
A layout and template manager for Backbone.js applications.
Rx Js
The Reactive Extensions for JavaScript
Mousetrap
Simple library for handling keyboard shortcuts in Javascript
Fluxxor
Flux architecture tools for React
Bottlejs
A powerful, extensible dependency injection micro container for JavaScript applications
Backbone Associations
Create object hierarchies with Backbone models; Respond to hierarchy changes using regular Backbone events.
Tweet
put twitter on your website with tweet, an unobtrusive javascript plugin for jquery
Node Pg Migrate
Node.js database migration management for Postgresql
Meld
AOP for JS with before, around, on, afterReturning, afterThrowing, after advice, and pointcuts
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.