wSHDCOM

wSHDCOM is an application for debugging serial communications. It give you posibility to send data via serial line and receive it. All of this data are displayed as live hex dump view.
And this is not all! Using possibility to listen two com port in the same time you can actually spy serial communications using same cable you use with ViewComm but in this case for free.
Here are some key features of "wSHDCOM":
ï¿­ Manually send one or more data via serial port in decimal, hexadecimal, ASCII or binary format
ï¿­ Time stamp on each received and/or sent byte
ï¿­ History of all data sent
ï¿­ Display sent/received data in hex dump mode
ï¿­ Show sent/received data in hex, dec, bin or oct form
ï¿­ Save communication session on disk for later review
ï¿­ Sent communication session via e-mail directly from program
ï¿­ Export communication session to HTML format
ï¿­ Copy selected portion of communication session to clipboard
ï¿­ Possibility to spy communication using two serial port (ViewCOMM mode)
ï¿­ Possibility to spy communication without port using spy driver (No port - ViewCOMM mode)
ï¿­ Command line switches support
ï¿­ Search capability
ï¿­ Small and compact program - Suitable to be run from USB disk
ï¿­ Install and uninstall program
ï¿­ Scripting support with support for user interaction.
ï¿­ Menu and toolbar customisation options
ï¿­ Help
ï¿­ Easy to use
ï¿­ Free!!!
Requirements:
ï¿­ At least one serial port