Apps similar to ShaderWorkshop include Bitspace, which is free and open source. Other options are Alma.sh, SHADERed, Shadertoy and Shader Editor. Code Editors like ShaderWorkshop are a crowded field, with more than 25 alternatives for the web, Windows, Linux, self-hosting and iPhone.
Synthclipse is a GLSL shader prototyping tool. It makes possible to fast develop all kinds of shaders: Fragment (FS), Vertex (VS), Geometry (GS), Tessellation (TS) and Compute (CS). Shader development can be done using compatible with Fragmentarium and Shadertoy (but limited to...
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.
