Across Tabs
Easy communication between cross-origin browser tabs
Routie
a tiny javascript hash router
Bootstrap Ajax
A library for adding declarative ajax functionality to your website
Fast Memoize.js
:rabbit: Fastest possible memoization library
Backbone Deep Model
Improved support for models with nested attributes.
Davis.js
RESTful degradable JavaScript routing using pushState
Tweet
put twitter on your website with tweet, an unobtrusive javascript plugin for jquery
Sticky Kit
A jQuery plugin for creating smart sticky elements
Gas
Google Analytics on Steroids. A Google Analytics implementation with more power features.
Egjs
Set of UI interactions, effects and utilities components library using jQuery.
Mobservable
Observable data. Reactive functions. Simple code.
Knockout Projections
Knockout.js observable arrays get smarter
Kefir
A Reactive Programming library for JavaScript
Eve.js
A <3kb JavaScript file providing three simple methods to organize code into CSS namespaces which magically restrict code to the current context, allowing for dramatic reductions to code size and development time.
Contra
Asynchronous flow control with a functional taste to it
jStorage
jStorage is a simple key/value database to store data on browser side. As a bonus it is also a local pubsub platform to sync data between tabs/windows
Meld
AOP for JS with before, around, on, afterReturning, afterThrowing, after advice, and pointcuts