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
Hamsters.js
100% Vanilla Javascript Multithreading & Parallel Execution Library
Tweet
put twitter on your website with tweet, an unobtrusive javascript plugin for jquery
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.
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 Associations
Create object hierarchies with Backbone models; Respond to hierarchy changes using regular Backbone events.
Backbone Nested
A plugin to make Backbone.js keep track of nested attributes.
Meld
AOP for JS with before, around, on, afterReturning, afterThrowing, after advice, and pointcuts
Then.js
The fastest, smallest, fully compatible, full-featured asynchronous module!
Mediator.js
An implementation of the mediator pattern for asynchronous events in Javascript
Routie
a tiny javascript hash router
Cellx
Ultra-fast implementation of reactivity for javascript
Inject
AMD and CJS dependency management in the browser