A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware. Official successor to Process Hacker.




The best free alternative to CurrPorts is System Informer, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to CurrPorts and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to CurrPorts are PortKiller, TCPView, Paessler PRTG Network Monitor and Netshow.
A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware. Official successor to Process Hacker.




Advanced multi-OS desktop tool for monitoring and managing local TCP ports, identifying bound processes, watching ports for notifications, handling Cloudflare Tunnels, filtering and pinning, managing Kubernetes port-forwards with logs, plus real-time process termination.


TCPView is a Windows program that will show you detailed listings of all TCP and UDP endpoints on your system, including the local and remote addresses and state of TCP connections.

Comprehensive monitoring solution with over 200 sensor types, user-friendly interface, and powerful capabilities such as traffic analysis, failover clustering, and remote probes. Offers email and SMS alerts, supports SNMP and WMI, provides high-availability features and detailed reporting.






Lightweight, performant interactive network connection monitor with friendly service names.


Advanced Port Scanner is a fast and free software for port scanning. It will allow you to quickly find all open ports (TCP and UDP) and detect versions of programs running on them. The utility includes many features simplifying network management.




PortChecker.app is a free online utility that instantly checks open ports on your device and server. The tool supports remote port scanning, IP lookup, and network diagnostics, making it a reliable solution for developers, system administrators, and cybersecurity professionals.


SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers. You can view the TCP/IP conversations in Ascii mode (for text-based protocols, like HTTP, SMTP, POP3 and FTP) or as hex dump (for non-text base...

Resource Monitor is a system application in Microsoft Windows operating systems. It is used to view information about the use of hardware (CPU, memory, disk, and network) and software (file handles and modules) resources in real time.




Port Checker is a simple tool for checking open ports on your computer/device. Test port forwarding setup on your machine. Diagnose connection issue with the ports.


CurrPorts is a small utility that is used to view the open ports on your local machine. PRTG monitors servers and network equipment throughout the network for uptime, lag, latency, etc... Nothing alike.