checkmk is a comprehensive monitoring suite for applications, servers, networks, and cloud environments. Based on Nagios Core, it provides enhanced automation, auto-discovery, and a modern web interface for IT infrastructure monitoring.
- Current stable: 2.4.0p22 (2026)
- Auto-discovery: Automatic detection of services and hosts
- Agent-based monitoring: Lightweight agents for efficient data collection
- Nagios-compatible: Full Nagios plugin compatibility
- Modern web UI: Intuitive interface with dashboards and visualizations
- Alerting: Flexible notification and escalation rules
- Reporting: Built-in reporting and SLA tracking
- IT infrastructure monitoring
- Application performance monitoring
- Network device monitoring
- Cloud infrastructure monitoring
- Hybrid cloud monitoring
- Core: Python, C
- Web UI: Python, JavaScript
- Agents: Python, C
- GPL-2.0 (Raw Edition)
- Enterprise editions available
- Open-source Raw Edition available
- Enterprise editions with additional features
- Active development and support
¶ History and References