Tabslet
Yet another jQuery plugin for tabs, lightweight, easy to use, mobile-friendly and with some extra features.
Angular Tooltips
Angularjs tooltips module, add tooltips to your elements
Highlighter.js
Easily navigate the DOM and highlight the elements - http://720kb.github.io/highlighter.js/
Stretchy
Form element autosizing, the way it should be.
Html5tooltipsjs
Light and clean tooltips
jQuery Tourbus
A jQuery tour/walkthrough plugin.
Joyride
jQuery feature tour plugin.
Pageguide
An interactive guide for web page elements using jQuery and CSS3
Bootstro.js
Tiny JS library using bootstrap's popovers to help guide your users around your website
Tagmanager
A jQuery plugin (working nicely with twitter bootstrap)
Ng Morphing Modal
Angular Morphing Modal
React Widgets
set of stateless ui widgets for React
React Bootstrap
Bootstrap 3 components built with React
Hint.css
A tooltip library in CSS for your lovely websites.
Freewall
Freewall is a cross-browser and responsive jQuery plugin to help you create many types of grid layouts for desktop, mobile, and tablet...
Bootstrap Progressbar
progressbar interactions for twitter bootstrap 2 & 3
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.