The Skylab GPS Simulator basically generates NMEA-0183 GPS sentences. It offers a broad variety of configuration capabilities. Different input and output methods, which can be used parallely and especially the possibility of taking the simulated data directly from a map of the integrated WMS Client make this program of interest for a lot of applications. Functionality like GPS multiplexing, GPS logfile replaying, GPS interface transformation or remote GPS bridging can be very useful for a professionel User as well as a navigation hobbyist.