Eqcss
EQCSS is a plugin that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Html
A simple, extensible way to work directly with the DOM.
Minified.js
Replace jQuery or MooTools with a <4kB Library
Tapestry5 jQuery
Tapestry 5 jQuery integration. Fully replace Prototype and Scriptaculous with jQuery with as less as possible compatibility issues
Hapi
The Simple, Secure Framework Developers Trust
React Virtualized
React components for efficiently rendering large lists and tabular data
Sizzle
A sizzlin' hot selector engine.
jQuery.lazy
A lightweight, fast, feature-rich, powerful and highly configurable delayed content, image and background lazy loading plugin for jQuery & Zepto.
Wow
Reveal CSS animation as you scroll down a page
Interact.js
Drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers (and also IE8+)
Gliojs
Exit popup easely. Detects if the mouse of a user leaves the viewport borders of your website
Masonry
Layout elements in a grid, like a mason fitting stones in a wall
Tire
Tire is a lightweight JavaScript library for modern browsers
Laconic
Sane DOM Generation
Dragula
:ok_hand: Drag and drop so simple it hurts
Design Blocks
A set of 170+ Bootstrap based design blocks ready to be used to create clean modern websites.