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 Blender apps. The best Malt alternative is TalenexPro, which is free. Other great apps like Malt are MoonRay, LuxCoreRender, V-Ray and POV-Ray.