parallel port

Automatically detect if the modem on the selected COM port is connected.

Recording and playing back data from the serial communications port.

MacMediSift is mainly a port of MediaSift for Windows from David Griffiths.

FPipe is a source port forwarder/redirector.

Command line port scanner.

Redirect communication data from any serial port into a text file and analyze it

This is a trojan horse port scanner. It scans for over 150 trojan horse ports...

NCD relay controllers offer computer control from the RS-232 serial port