Paper.js - Open source vector graphics scripting framework that runs on top of the HTML5 Canvas.
Artboard Studio - Online graphic design app mainly focused on product mockups.
p5.js - JS library for creating graphic and interactive experiences
Snappa - The perfect graphic design tool for digital marketers.
Three.js - A JavaScript 3D library which makes WebGL simpler.
Create - CREATE is a powerful and intuitive mobile creativity tool.