Serial Com Port Monitor 3.0 is a professional software for RS232/422/485 COM ports monitoring. It monitors, displays, logs and analyzes all serial port activity in Windows OS. This strong system utility was developed for exploring the way OS works, monitoring how applications use ports, for tracking down problems in system or software configurations and processes, implementing, debugging and reverse-engineering serial protocols.

The license of this software is Free Trial Software, the price is $69.95, you can free download and get a free trial.