Alpaca
Easy HTML5 Forms for jQuery
G2 Plot
:dango: An interactive and responsive charting library
Pikaday
A refreshing JavaScript Datepicker — lightweight, no dependencies, modular CSS
Magicsuggest
Multiple Selection Combo Box using Bootstrap 3
Switchery
iOS 7 style switches for your checkboxes
Jquery Tokeninput
Tokeninput is a jQuery plugin which allows your users to select multiple items from a predefined list, using autocompletion as they type to find each item. You may have seen a similar type of text entry when filling in the recipients field sending messages on facebook.
jQuery Smart Auto Complete
AutoComplete plugin with smart defaults and flexibility to customize
Webuploader
It's a new file uploader solution!
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.
Zxcvbn
zxcvbn, named after a crappy password, is a JavaScript password strength estimation library. Use it to implement a custom strength bar on a signup form near you!
jQuery Timepicker
Adds a timepicker to jQueryUI Datepicker
Mailcheck
Email domain spelling suggester
Colorpicker
jQuery UI widget for color picking (similar to the one in Microsoft Office 2010).
X Editable
In-place editing with Twitter Bootstrap, jQuery UI or pure jQuery
Datedropper
datedropper is a jQuery plugin that provides a quick and easy way to manage dates for input fields.
Autosize
jQuery plugin for dynamic textarea sizing