In principle, each of the GIS variants LIS, NIS, SIS and EIS described so far represent special branch IS from the point of view of the respective discipline. However, due to the specific nature of each discipline, there is still a larger group of GIS applications that are not covered by the previous mentioned IS. These include in particular special applications in the areas of marketing and sales (geomarketing, location planning), transport, logistics and traffic (fleet management, vehicle navigation), telecommunications (mobile radio, transmitter location planning), but also applications in construction, health care, emergency services, etc. This is illustrated by three examples.