Although no longer directly involved in the yahoo group, Helmut (personal site) is the man who made all of this possible. He built the first version of the panotools from scratch and continued development until ugly corporate bully ipix threatened him with legal action based on questionable patents.
As a mathematics professor, he seems to have shifted interest to other areas of science. Nevertheless, his creation lives on in the contribution and work of many devoted software developers and photographers.
Please, can a better copywriter than me write something nice here?