Typeahead.js
A fast and fully-featured autocomplete library
Semantic Ui
Semantic empowers designers and developers by creating a shared vocabulary for UI.
Flex Slider
An awesome, fully responsive jQuery slider plugin
Clipboard.js
:scissors: Modern copy to clipboard. No Flash. Just 2kb :clipboard:
Anima
CSS animations with a soul
Jquery Transit
Super-smooth CSS3 transformations and transitions for jQuery
Framework7
Full Featured HTML Framework For Building iOS & Android Apps
Cyclejs
A functional and reactive JavaScript framework for predictable code
jQuery Textcomplete
Introduce autocompleting power to textareas, like GitHub comment forms have.
When
A solid, fast Promises/A+ and when() implementation, plus other async goodies.
Q
A tool for making and composing asynchronous promises in JavaScript
Particles.js
A lightweight JavaScript library for creating particles
Webshim
Webshims Lib is a modular capability-based polyfill-loading library
Layr
Dramatically simplify full‑stack development
Hitch
A lightweight engine that allows you to hitch new capabilities to the browser (prollyfill).
jQuery Autocomplete
Ajax Autocomplete for jQuery allows you to easily create autocomplete/autosuggest boxes for text input fields.
Stampit
Create objects from reusable, composable behaviors.