AwesomeBump 19 alternatives | Website
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. AB was made to be a new alternative to known gimp plugin called Insane Bump.
AwesomeBump is totaly written in Qt thus you don't need to install any aditionall libraries. Just download and install Qt SDK, download the project from the repository, build and run. It will work on any platform supported by Qt.