Shdr
Shdr is an online ESSL (GLSL) shader editor, viewer and validator powered by WebGL.
5 Alternatives To Shdr
KodeLife
Real-time GPU shader editor, live-code performance tool and graphics prototyping sketchpad.
ProtoShade
Interactive OpenGL Shading Language (GLSL) compiler/editor for Android
ShaderLab
WebGL2 GLSL Editor for the browser.
ShaderWorkshop
Qt based, interactive GLSL fragment shader editor
Shaderific
Create shaders on the go with the OpenGL shader development app for iOS