Simple Port Forwarding works with WebPages and not directly with your router.
HHD Software, Ltd.
It allows you to create virtual serial ports and emulate their behavior.
A handy suite of network tools to help get your ports forwarded.
Serial Port Utility is a professional communication software for serial port.
This app can be used on the LPT or USB port to control all kind of programs.
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...
The vnar performs measurements on one port or two port networks.