Simple WebGL Fragment Shader Editor
Google Chrome DevTools extension to live edit WebGL GLSL shaders
WebGL Shader Playground.
Combo of esbuild, GLSLX, three.js... to develop/build quickly + easily WebGL canvas bundles. Minimized bundles can be used as 3D animated backgrounds on a website - Demo:
A web-based GLSL editor made with three.js, React and Redux, as a student resource in the UoL arcade project