Normal/Bump Map Maker (AKA: BumpMaker, Normal Map Maker) is a tiny app for Windows used to create 3D game textures. It can convert ordinary textures into normal and bump material textures with ease. That is, it converts a common image map to a map with normal or bump texture.

AwesomeBump (AKA: Awesome Bump) is a free and open-source alternative of CrazyBump or the Insane Bump plugin for GIMP, developed by Krzysztof Kolasinski from Poland, using Qt library. It is used to generate high-quality normal, height, specular or ambient occlusion, metallic, roughness and other textures from a single image.

JSplacement is a powerful, easy-to-use and free pseudo-random HD 3D displacement maps generator for Windows, Mac and Linux platforms, developed by Windmill (Grigori Shevtsov) from Finland, using JavaScript and based on Electron. With it, we can quickly create a variety of very complex, electronics-like, Sci-Fi style texture maps for use in various 3D software.

CrazyBump is simple, easy-to-use yet professional 2D photo-to-3D map generation application. It doesn't offer many adjustable parameters, but still has a lot more details than the functionally similar Photoshop plugins, and is much easier to operate. Plus, it supports exporting normals, displacement, occlusion, specularity, and diffuse these five types of maps at the same time (i.e.: importing one image will result in five effects of maps simultaneously), as well as real-time preview.

ShaderMap is a professional and powerful normal map generating/baking/converting (from 3D models and textures) tool for Windows, free for non commercial use. In ShaderMap, users can choose the original materials as need, from which the program will automatically generate the ordinary, mirrored, displaced maps, the one covered by ambient light, and other types of maps.