Checkmk, self-hosted IT monitoring for just EVERYTHING!

Checkmk is a powerful, open-source IT monitoring tool that can monitor various infrastructure components, including physical servers, network devices, virtualization hosts, virtual machines, and Docker containers. It offers an automated service discovery feature and a comprehensive web interface for detailed statistics, alerts, and logs. Checkmk can be configured through a REST API and supports large-scale deployments. The Raw Edition is free, with added features in the Enterprise versions. Setup is straightforward with installation guides available for Docker, Linux, and other platforms.