Icinga

Icinga is a fully open-source monitoring platform that gives IT teams complete visibility across their infrastructure, from on-premises servers to hybrid and multi-cloud environments. Whether you're monitoring 50 hosts or 50,000, Icinga scales with your infrastructure. Flexible configuration, deep integrations with tools like Ansible, Puppet, and your own APIs, and a modern interface that keeps your team in control. Trusted by IT operations teams, team leads, and CTOs at companies who take reliability seriously. > Open source, always > Scales to the most complex enterprise environments > Integrates with your existing stack > Independent and community-driven