All activity
Serial Port Monitor is a professional application for RS232/422/485 COM ports monitoring. It monitors, displays, logs and analyzes all serial port activity in a system.
Serial Port Monitor
Monitor RS232/422/485 COM ports in your network
Virtual Serial Port Driver by Eltima creates virtual COM port pairs in the system. Using these ports serial applications can communicate with each other and transfer data via virtual null-modem cable.
Virtual Serial Port Driver
VSPD allows creating virtual serial port pairs on PC