Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Paper.js - Open source vector graphics scripting framework that runs on top of the HTML5 Canvas.
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
p5.js - JS library for creating graphic and interactive experiences
Adobe InDesign - Adobe InDesign is a desktop publishing software application.
Three.js - A JavaScript 3D library which makes WebGL simpler.