I have spent quite some hours experimenting with GPS trackers and GPS (server) tracking software.
While doing this, I felt a need to create a small GPS simulator for testing purposes.
So I did not need to use a real Tracker all the time. Cost-wise, due to mobile data. Or when you don't know if a certain problem might be related to the tracker, instead of the server.
It's quite simple and self explanatory. It contains some data from a route I once drove. And re-transmits this data to a server (IP/Port), in a changeable interval.
You can easily change the data yourself, to match a protocol or particular tracker you are testing yourself.
By default it contains protocol data matching my tracker (IMEI is fake). Which is some cheap Chinese clone of a Xexun TK102 / TK103 / Coban GPS103-B (I never really figured out which one... )