beat port

Port Magic is a port scan detector

Use Port Listener as a free lightweight utility to listen on the specified port.

Now, you can beat spam with this method

A manual Beats per Minute (BPM) counter for DJs

Active port forwarder is a software tool for secure port forwarding.

Smart Port Forwarding Allows you to Forward Ports Like a Normal Port

Antiy Port is a port to process mapper examination tool by Antiy Labs

An affordable, flexible and highly functional emulator of COM port device data!

Perform port forwarding, packet routing, cloning, and many other networking functions.

Debug COM Port communication.