Dialogika GmbH, Albertstr. Pascalschacht,  Tel. 935-0    Website

Icon Informationssysteme GmbH, Beethovenstr. 54, Tel. 777919-0  Website

Eurokey Software GmbH, Fischbachstr. 86 a, Tel. 79089-0   Website

KWZ Software & Service GmbH, Fischbachstr. 86 a, Tel. 79088-0, Informatik, Service, Software