The index computations of the second variation of area of unstable minimal and constant mean curvature surfaces was a joint project with Wayne Rossman in Koebe in Japan. The cooperation started during his visit in Berlin, and was continued via putting our experimental applets online to be accessible world-wide. The software development was continued in Berlin and the software archive on our web site was regularly updated with the newest version. Each time Rossman did an experiment using the web based software on our site he was sure to use the latest software without ever installing any local version.