NMEA Log Replayer

NMEA Log Replayer is free application usable for testing all kinds of NMEA applications (GPS, GLONASS, instrumentation, etc). Can playback pre-recorded GPS files with NMEA output.
It can output NMEA to:

  • Network host over UDP
  • Network host over TCP
  • COM Port (RS232)
It can send NMEA to multiple destinations at the same time. For example, you can send NMEA sentences to remote host and write the same NMEA log to COM port on your computer.


Please click link below to download NMEA replayer. You'll download ZIP archive containing *.exe file. No Installation required.


How to use it

Actually, it is easy as 1, 2, 3:

  1. Click "Choose file" and select NMEA log file for playback;
  2. Select output destinations by clicking "COM port", "TCP server" or "UDP server";
  3. Click "Start".
If you are going to send NMEA to remote host, please make sure, that something is waiting for connection on that remote host (in case of TCP. In case of UDP you can launch remote software at any time, since UDP protocol is connectionless).

If some error happens on some output then you will see exclamation mark near "X" button.


Free NMEA log replayer for playback previously recorder NMEA, UBX and other logs from navigation devices (i.e. GPS)


  • Microsoft .NET Framework 4.0 (x86 or x64)