Agfa, Airport Weeze, Aspect Communications, Avaya , BASF, Bayer, Bertelsmann, BSHG, Comdisco, Commerzbank, Comprendium, DaimlerChrysler, Debis, Detecon, Deutsche Bahn, Deutsche Telekom, Deutsche Post, EVK Düsseldorf France Cofiroute, Fraport, Genesys, Global Switch, Governikus, Herzklinikum Leipzig, IBM, ITZBund, J+S DiaLog, Koelnmesse, LBK-FHH, LVR, Mannesmann, microTOOL, Missio Aachen, Nixdorf Computer, NWO, Orbit IT-Solutions, Polar Brauerei Venezuela, Progress Software Corporation, Quantum Technologies, Rheinbraun, RWE, Salzgitter Industriebau, SEW-Eurodrive, Siemens, SNI, T-Systems, ThyssenKrupp, Toll Collect, UBS, UNI-Köln, Volkswagen, WDR, WWF, Xerox PARC, Yamaha, ZDF