Flickity - touch enabled and responsive gallery
TJ Holowaychuk "is leaving node.js land" and starting his way with Go lang. That's an... interesting news and forces me to think about "my next programming language" :) Maybe to give a try to Dart ?
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.