Xdomain
A pure JavaScript CORS alternative
Responsive Elements
Responsive elements makes it possible for any element to adapt and respond to the area they occupy. It's a tiny javascript library that you can drop into your projects today.
jQuery Chained
Chained Selects jQuery plugin.
jQuery Lazyload
jQuery plugin for lazy loading images
Loki JS
javascript embedded / in-memory database
jQuery Super Labels
Give your forms a helping of awesome!
Brick
UI Web Components for Mobile Web Apps
T Former.js
tFormer.js - Empower your HTML forms
Flipload
Flipping elements and show a loading indicator easily.
Gamejs
GameJs is a thin library on top of the HTML canvas element. In addition to the drawing functions it has a set of generally helpful modules for game development.
Nprogress
For slim progress bars like on YouTube, Medium, etc
Selectize.js
Selectize is the hybrid of a textbox and <select> box. It's jQuery based and it has autocomplete and native-feeling keyboard navigation; useful for tagging, contact lists, etc.
Domready
let's you know when the dom is ready
Swig
Take a swig of the best template engine for JavaScript.
Jit
The JavaScript InfoVis Toolkit provides tools for creating Interactive Data Visualizations for the Web
Coquette
A micro framework for JavaScript games
Isjs
Check your data against regular expressions or known keywords.