com port

A port from C to Ruby of the examples in M.

Allows you to connect any serial port devices over TCP/IP network or Internet

Utility for monitoring and setting the individual bits of the Parallel port

Start/stop monitoring of the serial port

This program allows you to view and control parallel port on hardware level.

lets you a full control over the Parallel Port of your PC

Serial port data transfer software log data to local remote computer disk file

Control external devices with serial interface - use Serial Port AX Control.

Serial port data capture freeware log analyze RS232 serial equipments data

Eltima Serial Port Terminal - a handy application for testing serial ports.