jQuery Autotab
A jQuery plugin that provides auto tabbing and filtering on text fields in a form
jQuery Steps
A powerful jQuery wizard plugin that supports accessibility and HTML5.
Flexi Color Picker
A pure JavaScript color picker - no images, external libraries, CSS or 1px divs.
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!
Progression.js
A jQuery plugin that gives users real time hints & progress updates as they complete forms
Expanding Textareas
jQuery plugin for elegant expanding textareas
jQuery Super Labels
Give your forms a helping of awesome!
jQuery Chained
Chained Selects jQuery plugin.
At.js
Add Github like mentions autocomplete to your application.
Formbuilder
[Needs Maintainer] Formbuilder is a small graphical interface for letting users build their own webforms.
Filereader.js
A lightweight wrapper for the JavaScript FileReader interface
Really Simple Color Picker
Simple Color Picker written in jQuery.
Hide Show Password
Because life's too short to waste time re-typing passwords.
H5F
A JavaScript library that allows you to use the HTML5 Forms chapters new field input types, attributes and constraint validation API in non-supporting browsers.
Pretty Checkable
A jQuery plugin to replace checkboxes and radios for custom images
Switchery
iOS 7 style switches for your checkboxes
Bootstrap Wysiwyg
Tiny bootstrap-compatible WISWYG rich text editor