Malt is described as 'Fully customizable real-time rendering framework for animation and illustration. Designed as a community effort to expand the possibility space of 3d rendering, it provides graphics programmers and technical artist an enjoyable “shadertoy-like” workflow inside Blender' and is an app. There are more than 25 alternatives to Malt for a variety of platforms, including Windows, Mac, Linux, Sketchup and Autodesk 3ds Max apps. The best Malt alternative is LuxCoreRender, which is both free and Open Source. Other great apps like Malt are MoonRay, POV-Ray, Cycles Renderer and RenderMan.