… Port Listening is a free and small utility with one simple function: to listen to connections on local ports. The program functions with either TCP or UDP ports and any port is selectable. It doesn't work with multiple ports, but Port Listener does support …
can listen on the specified port and determine which application uses it at any given moment, with this lightweight, portable tool Port Listener is a simple, lightweight program that allows you to listen to a user-selected port. It provides a user-friendly More about Port Listener
Displays the list of all currently opened TCP/UDP ports on your computer.
A simple tool to forward ports on your network interface.
Quickly optimize your TCP connection settings.
Quickly search for and find open ports on a network or range.
A collection of utilities for networking and Internet connections.
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The world's most popular network protocol analyzer.
Portable version of a free and open-source packet analyzer.