http://github.com/kmkolasinski/AwesomeBump
AwesomeBump is a free and open source program designed to generate normal, height, specular or ambient occlusion, roughness and metallic 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. Since version 3.0 AB is supporting PBR shading model which makes this software more Awesome!

Awesome find from an awesome bloke, thanks Pilou!

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Yep - thanks Pilou! Very nice indeed. :)

Frenchy, your software discoveries alone are worth the price of admission here! :-) Thank you.
Ron