Famatech International Corp.
Retrieves versions of programs running on the detected ports.
List available hosts, open ports, and their characteristics.
Active Ports monitors all open TCP and UDP ports on a local computer.
Process And Port Analyzer is a packet viewer and sniffer.
Simple Port Forwarding works with WebPages and not directly with your router.
Simple Port Tester is a neat application created to test TCP and UDP ports.
RepSnapper is an alternative host software the RepRap open source 3D printer.
The dialer uses one local UDP port and one local TCP port.
SkPortScan ActiveX Control is a flexible and powerful port scanner control.
ZylSerialPortAX is a thread based asynchronous serial port ActiveX control.
StrokeReader is a serial port interface ActiveX control.
Meddler is an HTTP Server running on port 8088 on your local PC.
Infoprint Port Monitor lets you print from Windows applications to a printer.
Hot Time Software
It's a software for the printer and parallel port.
Flachmann & Heggelbacher
Establishes TCP connections, accepts a TCP connection on a local port, etc.
Tucson Software Services
Port Forward is Windows Service which forwards any arbitrary set of local ports.