IconVault's Random Port generator picks random usable port numbers for dev servers, containers and test setups. Choose 1, 5, 10, 20 or 50 ports, toggle whether to exclude well-known ports 0 to 1023, and every batch is drawn with your browser's cryptographically secure random generator with no duplicates in one batch. Click any port, or the whole list, to copy it.

It is free and runs fully in your browser, so nothing about your setup is shared. The honest limit: the tool picks random numbers, it does not check whether a port is actually free on your machine. Before binding, verify the port is not already in use, and remember that well-known ports are excluded by default because they usually need elevated privileges.