Some of our code was not dedicated to demos.Axel Follet worked hard on a great STE soundtracker.
P.F. worked also a long time on the Atari Falcon, and released a great graphic program. He also worked on the accelerator cards on Falcon, and on Linux 68k (more recently).
I (Gadget) made marketing software, and released some tools used to make the demos. I also coded a videotex server on my Mega ST. It was the french equivalement of a BBS.
Magnum made several little games, too.