jScrollPane
Pretty, customisable, cross browser replacement scrollbars
Rye
A modern, lightweight browser library using ES5 natives
Mag.js
MagJS - Modular Application Glue
Egjs Infinitegrid
A module used to arrange card elements including content infinitely on a grid layout.
Nested
Gap free multi column grid
Ac Colors
ac-colors is a reactive JavaScript color library that can freely convert between RGB, HSL, HEX, XYZ, LAB, LCHab, LUV, and LCHuv, as well as handle random color generation and contrast ratio calculation.
Minified.js
Replace jQuery or MooTools with a <4kB Library
Design Blocks
A set of 170+ Bootstrap based design blocks ready to be used to create clean modern websites.
Dragula
:ok_hand: Drag and drop so simple it hurts
Sizzle
A sizzlin' hot selector engine.
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Eqcss
EQCSS is a plugin that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up
Aurora
Hate Cookies? Introducing Aurora, 100% Cookie-Free Open Website Analytics. Collect Anonymous Data. Make your Audience Happy Now!
Tire
Tire is a lightweight JavaScript library for modern browsers
Packery
bin-packing layout library
jQuery Evergreen
Small & fast DOM and event library for modern browsers.
Node List.js
NodeList implementation/library - Use the Native DOM APIs as easily as jQuery