Chosen
Chosen is a library for making long, unwieldy select boxes more friendly.
Nprogress
For slim progress bars like on YouTube, Medium, etc
Rome
Customizable date (and time) picker. Opt-in UI, no jQuery!
Materialize
Materialize, a CSS Framework based on Material Design
Animated Modal.js
animatedModal.js is a jQuery plugin to create a fullscreen modal with CSS3 transitions. you can use the transitions by animate.css or create yourself their transitions.
Typeahead.js
A fast and fully-featured autocomplete library
Messenger
Growl-style alerts and messages for your app. #hubspot-open-source
Grid
Drag and drop library for two-dimensional, resizable and responsive lists
Bootstrap Switch
unofficial bootstrap switch
Timeline JS
TimelineJS: A Storytelling Timeline built in JavaScript.
Gmaps
the easiest way to use Google Maps
Bootstrap Daterangepicker
Date range picker component for Bootstrap
Async Reactor
Render async Stateless Functional Components in React
Jstree
jquery tree plugin
Headroom.js
Give your pages some headroom. Hide your header until you need it
React Bootstrap
Bootstrap 3 components built with React
Bootbox
Wrappers for JavaScript alert(), confirm() and other flexible dialogs using Twitter's bootstrap framework