VectorWiki - A huge repository of ~120K brand logos in SVG format for free and quick download.
inkface - Inkface is SVG based GUI framework.
Brands of the World - Open source database of brands vector logos
GraphicsJS - Free open-source JavaScript library for easily drawing HTML5 graphics and animation.
BonsaiJS - A lightweight graphics library with an intuitive graphics API and an SVG renderer.
p5.js - JS library for creating graphic and interactive experiences