Nagios is an enterprise-grade, open-source monitoring solution designed to monitor the health, performance, and availability of IT infrastructure, networks, servers, applications, and cloud environments. It helps organizations identify issues before they cause failures, ensuring system uptime and optimal performance.

Zabbix is an open-source, enterprise-grade monitoring software designed to track and analyze the performance and availability of networks, servers, applications, cloud environments, and services.

Wazuh is a free and open source security platform that provides unified SIEM and XDR protection. It protects workloads across on-premises, virtualized, containerized, and cloud-based environments.