GPSSIM 2.2.0.1 was available as a free download on our software library. The following versions: 2.2 and 2.1 were the most frequently downloaded ones by the program users. The actual developer of the free software is HL-soft. GPSsim.exe is the most frequent filename for this program's installer. GPSSIM lies within System Utilities, more precisely Device Assistants.
From the developer:
GPSsim application is software based GPS device simulator.
GPSsim plays back NMEA data that was saved previously. It is also possible to generate custom NMEA data.
GPSsim allows you to test various PC-based navigation programs as well as use it as data logger application to track vehicle location
You may want to check out more software, such as Line 6 Monkey or DockWare Pro for Pocket PCs, which might be related to GPSSIM.