ShaderMap is described as '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' and is an app in the photos & graphics category. There are more than 10 alternatives to ShaderMap for Windows, Linux, Mac and Online / Web-based. The best alternative is AwesomeBump, which is both free and Open Source. Other great apps like ShaderMap are Quixel Suite, NVIDIA Melody, Crazybump and Substance B2M.
AwesomeBump is an open source program designed to generate normal, height, specular or ambient occlusion textures from a single image. Since the image processing is done in 99% on GPU the program runs very fast and all the parameters can be changed in real time.
Quixel was founded in 2011 by Teddy Bergsman and Waqar Azim, based on the vision of substantially speeding up how creators build digital environments, by giving them access to a vast and ever-expanding library of 3D building blocks, and easy-to-use tools to greatly simplify the...
NVIDIA Melody 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.