Shaders - Shader editor is described as 'app which let you view, create and share shaders with other users. Shaders are little graphics programs which run on the GPU' and is an app in the Development category. There are more than 10 alternatives to Shaders - Shader editor for a variety of platforms, including Online / Web-based, Windows, Linux, Self-Hosted solutions and Android. The best alternative is Shadertoy, which is free. Other great apps like Shaders - Shader editor are Shader Editor (Free, Open Source), SHADERed (Free, Open Source), Shade - Pro Shader Editor (Freemium) and KodeLife (Free).
ShaderTool provides a flexible and editable node-powered pipeline that allows you to write shaders without also having to have written an engine. Use the integrated code editor to directly write shader code in either HLSL (DirectX) or GLSL (OpenGL).