Simple Port Forwarding works with WebPages and not directly with your router.
List available hosts, open ports, and their characteristics.
Serial Port Software
Serial Port Splitter grants simultaneous access to a COM port from several apps.
Active Ports monitors all open TCP and UDP ports on a local computer.
Displays, logs and analyzes all serial port activity in a system.
A tool to provide a visual means to send and receive data through serial ports.
The BasicX Programming Environment uses the PC parallel port for the BX0.
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The PF900 comes with a front loader port and programming tool.
Router Port Forwarding is a port forwarding and port triggering tool for router.
Virtual Serial Port Driver allows creating virtual serial port pairs on a PC.
HW Virtual Serial Port allows creating virual serial port drivers.
Parallel Port PIC Programmer uses PC's parallel port for communication.
COM Port Data Emulator is a tool for emulating a com port or an Ethernet device.
COM Port Stress Test is a tool for testing a COM or RS232 port (device).
1st Net Scanner is a useful IP Finder and Port Finder. It builds IP finder, port finder, IP scanner...