W2ui
JavaScript UI library for data-driven web applications
Bootstrap Switch
unofficial bootstrap switch
jQuery Knob
Nice, downward compatible, touchable, jQuery dial
Onepage Scroll
Create an Apple-like one page scroller website (iPhone 5S website) with One Page Scroll plugin
Bootswatch
Themes for Bootstrap
Ladda
Buttons with built-in loading indicators.
Spin.js
A spinning activity indicator
Socialite
Socialite provides a very easy way to implement and activate a plethora of social sharing buttons.
Materialize
Materialize, a CSS Framework based on Material Design
Bootbox
Wrappers for JavaScript alert(), confirm() and other flexible dialogs using Twitter's bootstrap framework
Semantic Ui
Semantic empowers designers and developers by creating a shared vocabulary for UI.
Clipboard.js
:scissors: Modern copy to clipboard. No Flash. Just 2kb :clipboard:
jQuery Autocomplete
Ajax Autocomplete for jQuery allows you to easily create autocomplete/autosuggest boxes for text input fields.
Slate
A completely customizable framework for building rich text editors.
Highlight.js
Javascript syntax highlighter
Swing
A swipeable cards interface. The swipe-left/swipe-right for yes/no input. As seen in apps like Jelly and Tinder.
Typeahead.js
A fast and fully-featured autocomplete library