When comparing Normal Map Generator vs Substance Bitmap2Material, the Slant community recommends Substance Bitmap2Material for most people. In the question“What are the best programs for making height maps, normal maps, and/or other maps?” Substance Bitmap2Material is ranked 4th while Normal Map Generator is ranked 6th. The most important reason people chose Substance Bitmap2Material is:
B2M generates any output that you may need from a single image automatically (base color, normal, metallic, roughness, ambient occlusion).
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Pros
Pro For the starving 3D artists
Pro Generates several outputs from a single image
B2M generates any output that you may need from a single image automatically (base color, normal, metallic, roughness, ambient occlusion).
Cons
Con Comes at a price
Sets you back over 100 dollars.
Con Not a complete tool
B2M will only allow you to create a normal map from an existing image. You cannot create a custom texture from scratch with it.