Conditioner
Frizz Free, Environment-aware, JavaScript Modules
Tangle
a JavaScript library for reactive documents
Pegasus
Load data while still loading other scripts and display data faster in jQuery, Backbone, Angular, ... apps
Tweet
put twitter on your website with tweet, an unobtrusive javascript plugin for jquery
Hamsters.js
100% Vanilla Javascript Multithreading & Parallel Execution Library
Node Decorators
node-decorators
Contra
Asynchronous flow control with a functional taste to it
Stately.js
Stately.js is a JavaScript based finite-state machine (FSM) engine for Node.js and the browser.
Backbone Associations
Create object hierarchies with Backbone models; Respond to hierarchy changes using regular Backbone events.
JayData
JayData is a unified data access library for JavaScript to CRUD data from different sources like WebSQL/SQLite, IndexedDB, MongoDb, ASP.NET WebAPI, OData, HTML5 localStorage, Facebook or YQL. The library can be integrated with KendoUI, Knockout.js, Handlebars.js or Sencha Touch 2 and can be used on Node.js as well.
Backbone Nested
A plugin to make Backbone.js keep track of nested attributes.
Mediator.js
An implementation of the mediator pattern for asynchronous events in Javascript
Then.js
The fastest, smallest, fully compatible, full-featured asynchronous module!
Meld
AOP for JS with before, around, on, afterReturning, afterThrowing, after advice, and pointcuts
Routie
a tiny javascript hash router
Cellx
Ultra-fast implementation of reactivity for javascript
Inject
AMD and CJS dependency management in the browser