Best Network Diagnostic Software 2026

Netcat reads and writes TCP or UDP data on Linux, with port scanning and DNS checks.

Dipiscan scans Windows IP ranges, looks up machines and shows routes or changes since a previous scan.

NetStat Agent monitors TCP and UDP connections on Windows and includes ping, DNS, route and ARP tools.

VisualRoute maps traceroute data on web and Windows to investigate latency, packet loss and routing paths.

Network Assistant uses language models to suggest vendor-specific diagnostic commands from network problem descriptions.

WifiInfoView displays Wi-Fi network information on Windows desktop systems.

NTTTCP is a Windows command-line network performance and throughput tool.

PingInfoView sends ping requests to multiple hosts on Windows and lists the results.

Ethr is an open-source command-line network performance tool for Linux, macOS and Windows.