WebGL shader sites

While browsing the programming subreddit today I learned about two really cool GLSL shader sites with live demos, which both deserve to be shared and remembered for future browsing.

Shadertoy
GLSL Sandbox

Both sites contain both the demos and the GLSL source code for rendering demos with 2 triangles. There’s a ton of mandelbrot’s, raymarchers and cool small demoscene examples. My personal favorites are the cloud demo, which I hope to implement a lighter version of in my own terrain demo at some point, and a raymarched version of the 2009 demo Elevated by RGBA and TBC.