Short description of Serial Port Sniffer ActiveX Control 1.0: Serial Port Sniffer is a powerful advanced ActiveX Control that allows your application to sniff (fully monitor and edit data flows) serial port in your system. Serial Port Sniffer ActiveX Control detects all serial port activity in your system, all applications that work with serial port and all the data that is being sent and received can be easily monitored with Serial Port Sniffer ActiveX Control within your own application.