Midway.js
Automatically center responsive elements!
jQuery Labelauty
A lightweight and beautiful jQuery plugin for radio and checkbox inputs.
Nano Scroller
A jQuery plugin that offers a simplistic way of implementing Lion OS scrollbars.
React Widgets
set of stateless ui widgets for React
Bootstrap Progressbar
progressbar interactions for twitter bootstrap 2 & 3
Animated Modal.js
animatedModal.js is a jQuery plugin to create a fullscreen modal with CSS3 transitions. you can use the transitions by animate.css or create yourself their transitions.
Upfile
Makes file inputs a pleasure to use with progressive enhancement.
Wijmo Open
Open Source jQuery UI widgets
J Query Context Menu
jQuery contextMenu plugin & polyfill
Multiple.js
Sharing background across multiple elements using CSS
J Query Ui Slider Pips
Plugin for adding little 'pips' , 'floats' and labels to a slider.
Round Slider
roundSlider - A free jQuery plugin
Uptodate
Keep your timestamps up to date
Timelined
A customizable CSS-only vertical timeline
Simptip
A simple CSS tooltip made with Sass
Angular Tooltips
Angularjs tooltips module, add tooltips to your elements