For comments and corrections, or to propose something to be included in the list, please send a mail. I do not take any guarantee about the quality of software referenced here. Use at your own risk. Links that currently point to nowhere now carry a icon. I want to say a big thanks to all those people that pointed me to new systems to include here. It is amazing that not only the authors themselves help to keep this list as complete as possible, but also people that come across something interesting.
Robert Tolksdorf, Networked Information Systems, FU Berlin, is-research.