1)   Docklight RS232 Terminal - RS232 Monitor 1.6 Docklight is a test, analysis and simulation tool for serial communication protocols (RS232, RS485/422 and others). * Simulating serial protocols * Logging RS232 data * Detecting specific data sequences * Responding to incoming data 2)   Bill Serial Port Monitor 3.0L To monitor (bi-directional) Serial communication RS-232 between two devices without physical cable, you can use the freeware Bill Serial Monitor. This freeware enable you to view, log, test and analyse the activity of the serial RS-232 port. 3)   Eltima Serial Port Monitor 1.2 Serial Port Monitor is a professional application for monitoring serial data exchange between serial devices and any Windows application. Serial Port Monitor comprises advanced features to display, log and analyze all serial port activity in a system