jQuery jKit
A very easy to use, cross platform, jQuery based UI toolkit, that's still small in size, has the features you need, and doesn't get in your way of doing things!
Bootstrap Daterangepicker
Date range picker component for Bootstrap
Amaran Js
Nice, sleek and stylish notifications.
Medium Editor
Medium.com WYSIWYG editor clone.
Sidr
Sidr is a jQuery plugin for creating side menus and the easiest way for doing your menu responsive.
Push.js
The world's most versatile desktop notifications framework :earth_americas:
Clipboard.js
:scissors: Modern copy to clipboard. No Flash. Just 2kb :clipboard:
Opentip
An open source javascript tooltip based on the protoype framework.
Editr
HTML, CSS and JavaScript playground
J Box
jBox is a powerful and flexible jQuery plugin, taking care of all your popup windows, tooltips, notices and more.
Fancy Select
A better select for discerning web developers everywhere.
Droptiles
Droptiles is a "Windows 8 Start" like Metro-style Web 2.0 Dashboard. It compromises of Live Tiles. Tiles are mini apps that can fetch data from external sources. Clicking on a tile launches the full application.
Bootstrap Datepicker
A datepicker for @twitter bootstrap forked from Stefan Petre's (of eyecon.ro), improvements by @eternicode
VisualSearch
A Rich Search Box for Real Data
q Tip2
qTip2 - Pretty powerful tooltips
jQuery Impromptu
An extention to help provide a more pleasant way to spontaneously prompt a user for input.