Shaders - Shader editor is an app which let you view, create and share shaders with other users. Shaders are little graphics programs which run on the GPU.
ShaderWorkshop Alternatives
ShaderWorkshop is described as 'Shader Workship is an interactive GLSL fragment shader editor inspired by ShaderToy and built with Qt' and is a Code Editor in the development category. There are more than 25 alternatives to ShaderWorkshop for a variety of platforms, including Web-based, Windows, Linux, Self-Hosted and iPhone apps. The best ShaderWorkshop alternative is Bitspace, which is both free and Open Source. Other great apps like ShaderWorkshop are Alma.sh, SHADERed, Shadertoy and Shader Editor.