Alternatives to: SolarWinds Network Performance Monitor

OmniVista 8770 Network Management System: A unified, all-in-one solution for managing Alcatel-Lucent Enterprise communication networks.

The OmniVista 2500 Network Management System provides comprehensive tools for managing and monitoring converged campus networks and data centers, improving efficiency and providing valuable insights.

phpIPAM is a free and Open Source web application for managing IP addresses.

WatchYourLAN is a lightweight network IP scanner with a web GUI for monitoring hosts and receiving notifications.

Wireshark is a free and Open Source network protocol analyzer used for capturing and analyzing network traffic.