Pegasus
Load data while still loading other scripts and display data faster in jQuery, Backbone, Angular, ... apps
Invisible
Invisible.js: Reusable models for the client and the server
Queen
A platform for running scripts on many browsers
Mediator.js
An implementation of the mediator pattern for asynchronous events in Javascript
Cellx
Ultra-fast implementation of reactivity for javascript
Then.js
The fastest, smallest, fully compatible, full-featured asynchronous module!
Backbone Nested
A plugin to make Backbone.js keep track of nested attributes.
Pilot
Pilot — multifunction JavaScript router.
Robotjs
Node.js Desktop Automation.
Intercooler Js
Making AJAX as easy as anchor tags
Angular History
A history service for AngularJS. Undo/redo, that sort of thing. Has nothing to do with the "back" button, unless you want it to.
PreloadJS
PreloadJS makes preloading assets & getting aggregate progress events easier in JavaScript. It uses XHR2 when available, and falls back to tag-based loading when not.
Backbone.stickit
Backbone data binding, model binding plugin. The real logic-less templates.
UI Router
The de-facto solution to flexible routing with nested views
Libretaxi
LibreTaxi, free and open source Uber/Lyft alternative to connect passengers and drivers.
Use.js
An AMD/RequireJS plugin for consuming incompatible JavaScript files.