NVIDIA Melody is described as 'Creates high quality normal maps that make a low-poly model look like a high-poly model. Simply load your low-poly working model, then load your high-poly reference model, click the "Generate Normal Map" button and watch Melody go to town' and is an app. There are more than 10 alternatives to NVIDIA Melody for Windows, Linux, Mac, Epic Games Store and GIMP. The best NVIDIA Melody alternative is Laigter, which is both free and Open Source. Other great apps like NVIDIA Melody are Quixel Suite, AwesomeBump, Resynthesizer and xNormal.
ShaderMap creates rendering textures such as normal maps, ambient occlusion, albedo, displacement, metalness, and roughness. Select a mode and source type then load the source file - ShaderMap will create a project generating maps from the source. It's that easy.
ModLab is a free tool that can generate and fine tune normal maps in a realtime rendering environment.
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