⏰ Day.js 2KB immutable date library alternative to Moment.js with the same modern API
A lightweight engine that allows you to hitch new capabilities to the browser (prollyfill).
A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more)
Date() for humans
A better way to use localStorage and sessionStorage
Tired of adding prefix for each broswer when it comes to the new css3 attributes?