Virtual Serial Port Driver allows creating virtual serial port pairs on a PC.
Serial Port Software
Serial Port Splitter grants simultaneous access to a COM port from several apps.
A tool to provide a visual means to send and receive data through serial ports.
HW Virtual Serial Port allows creating virual serial port drivers.
A handy suite of network tools to help get your ports forwarded.
Simple Port Forwarding works with WebPages and not directly with your router.
NMEATime can set your clock using a GPS receiver connected to your serial port.
Tucson Software Services
Port Forward is Windows Service which forwards any arbitrary set of local ports.
nGin Media Server is a tool that will set up Port Forwarding automatically.
Falco Software, Inc.
Gwadar Base is an action game set on the port town of Gwadar, Afghanistan.
Posiflex Technology Inc.
Set port settings and design print test for various Posiflex POS printers.
CDP Cisco Client is a highly efficient network monitor and troubleshooting tool.
Router Port Forwarding is a port forwarding and port triggering tool for router.
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.