CurrPorts is described as 'is network monitoring software that displays the list of all currently opened TCP/IP and UDP ports on your local computer' and is an app in the Network & Admin category. There are more than 10 alternatives to CurrPorts for a variety of platforms, including Windows, Linux, Online / Web-based, Android and PortableApps.com. The best alternative is TCPView, which is free. Other great apps like CurrPorts are PRTG Network Monitor (Freemium), Advanced Port Scanner (Free), Resource Monitor (Free) and SmartSniff (Free).
PortsMonitor is a system utility for monitoring system TCP/IP network connections by application, and connections' status. With Search Expression support, you can filter connection with preferred conditions.
Total Network Monitor 2 is a network monitoring software program that is designed to continuously monitor your local network, individual computers, and services that require careful attention and thorough control.
TCPEye is an easy-to-use monitoring application that will display a list of all network processes. It sports all the features of "netstat" command and adds some options of its own as well as some third party online tools for IP tracing.
CloseTheDoor indentifies all the listening ports TCP/UDP over IPv4/v6 and the associated program files. This will help you to detect security holes and close backdoors when you want to prevent remote attacks.