Nagios

Nagios provides open-source tools for monitoring IT infrastructure. It offers solutions for network, server, and application monitoring, helping users identify and resolve issues within their IT environments. The tools are designed to provide alerts and detailed insights into system performance and availability.

It is primarily used by system administrators, IT professionals, and organizations of all sizes that require comprehensive oversight of their IT systems. Nagios helps ensure the uptime and efficient operation of critical services by providing real-time status updates and historical data for performance analysis.