Best Network Diagnostic Tools

Best Network Diagnostic Tools compared. Indie picks from founders building right now, plus the established options.

Indie picks 1

Lightweight Windows app to find and fix port conflicts

CurrPorts by NirSoft displays all opened TCP/IP and UDP ports on Windows.

LiveTcpUdpWatch monitors TCP and UDP activity on Windows in real time.

Process Explorer from Sysinternals shows processes, handles, and network connections.

Process Hacker is a powerful system monitor with network and port visibility.

TCPView from Sysinternals lists TCP and UDP endpoints on Windows in real time.

Wireshark is a free network protocol analyzer for packet-level inspection.