Virtual whiteboard for sketching hand-drawn like diagrams
Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.
SDK for creating whiteboards and canvas experiences on the web.
Free online Design Editor.
Cairo in Go: vector to raster, SVG, PDF, EPS, WASM, OpenGL, Gio, etc.