KTop is currently developed and maintained by Chris Schläger cs@axys.de. In the past several other people have worked on KTop:
A. Sanda <alex@darkstar.ping.at>
Ralf Mueller <ralf@bj-ig.de>
Bernd Johannes Wuebben <wuebben@math.cornell.edu>
Nicolas Leclercq <nicknet@planete.net>
The porting to other platforms than Linux was done by:
FreeBSD: Hans Petter Bieker <zerium@traad.lavvu.no>