Flickity - touch enabled and responsive gallery
Flysystem - a filesystem abstraction which allows you to swap a local filesystem with a remote one. That could be very useful for assets manipulation system in CMS or something.
Flickity - touch enabled and responsive gallery
Waypoints is a JS library that makes it easy to execute a function whenever you scroll to an element.
snabbt.js - minimalistic animation library in JavaScript
Chartspree.io - kind a Lorem Ipsum charts. Allow to insert chart as image src.
Hover.css - a great collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on.