Skip Tunes - Control iTunes, Spotify, or Rdio from your Mac's menubar
Pixi.js - Fast lightweight 2D library that works across all devices
Baritone - Spotify controls that live in your menubar.
Substance - A JavaScript library for web-based content editing
CoverSutra - CoverSutra gives you a handy and attractive way to control iTunes without ever leaving your current...
Anime.js - Lightweight JavaScript animation library