Nagios

Nagios is a software tool that helps organizations monitor their computer networks, servers, and applications to ensure they are running smoothly. It checks the health of various systems continuously, identifies issues like outages or performance problems, and alerts staff so they can fix problems quickly. Think of it as a vigilant supervisor that ensures all parts of a digital infrastructure are functioning properly, helping prevent downtime and maintain reliable service. Nagios is widely used in IT to maintain system stability and optimize performance across complex networks.