Shadertoy is described as 'The first application to allow developers all over the globe to push pixels from code to screen using WebGL since 2009' and is an website. There are more than 10 alternatives to Shadertoy, not only websites but also apps for a variety of platforms, including Windows, Linux, Self-Hosted and iPhone apps. The best Shadertoy alternative is SHADERed, which is both free and Open Source. Other great sites and apps similar to Shadertoy are Shader Editor, The Book of Shaders, Shade - Pro Shader Editor and GSN Composer.
SHADERed is a lightweight tool for creating and testing HLSL and GLSL shaders. It is easy to use, open source and frequently updated with new features.
Create and edit GLSL shaders on your Android phone or tablet and use them as live wallpaper. A live-coding editor with syntax-highlighting lets you see results transparently in the background as you code and provides ample workspace to focus on your ideas.
The Book of Shaders provides a gentle, step-by-step guide through the abstract and complex universe of Fragment Shaders. Besides scores of insightful illustrations, the site includes a very intuitive live-coding editor for users to easily see changes as they code.
Shade transforms your device into a professional node-based shader editor. Build stunning, connected shader graphs that render in real time. You'll find full support for keyboard shortcuts, drag-and-drop, and documentation built right in.
The GSN COMPOSER is a free web-based visual programming environment for online multimedia processing. Typical areas of usage are education, research, entertainment, special effects, or arts.
Shdr is a live ESSL (GLSL) shader editor, viewer and validator powered by WebGL and built by Thibaut Despoulain (BKcore).
The Force is a web-based IDE/code editor for WebGL complete with audio input control, OSC support, texture panel and more.
An online GSGL Shader Gallery and live development tool. You can freely add to it without an account.
KodeLife is a fast, lightweight, live-coding IDE for shader development. It's available natively across Mac, Windows and Linux desktops and supports all flavors of OpenGL GLSL, as well as platform specific shading languages such as the Metal Shading Language and DirectX HLSL.
ShaderLab is the WebGL2 GLSL Editor for the browser. Code your shaders right in your browser with a live view to progress in the background. Then share and garner feedback through comments and check out other creators.
Shaderlab is the only solution that allows using external images from imgur (or any website that allows for cross-domain access) as input textures, and allows the user to use his own MP3 files as audio inputs. It also have a Vim mode by pressing F9 on the editor, to use search and replace with regexp.
You can use custom textures and custom audio with your shaders.
ShaderGif is an open source home for art made with code. Make gifs with GLSL, Javascript and p5.js.
Prototype Node Based Shader Editor in WebGL to edit and create materials interactively with nodes, where you can drag and drop textures and use multiple features similar to other editors
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More features & supports HLSL