Shader Toy is an online shader editor using the new WebGL specification to allow you to edit GLSL shaders. The tool is based online so there is no need to install any additional software. Shader Toy comes with lots of interesting shaders, including: Raymarching, procedural distance fields, metaballs, tunnels, deformations, postprocessing effects and many more. Shader Toy is ideal when you have an idea you want to sketch, or want to play a bit with shaders, but you don't have your OpenGL framework handy. This WebGL contribution and many more are available through the WebGL Wiki User Contributions.