Checkmk vs LibreNMS
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
Checkmk
Comprehensive IT infrastructure monitoring
VS
LibreNMS
Auto-discovering network monitoring system
| Feature | Checkmk | LibreNMS |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 83 · Excellent | 92 · Excellent |
| Category | Monitoring & Status | Monitoring & Status |
| License | GPL-2.0 | GPL-3.0 |
| Language | Python | PHP |
| Setup difficulty | Medium | Medium |
| Min. RAM | 1,024 MB | 1,024 MB |
| Deployment | docker, bare-metal | docker, bare-metal |
| GitHub stars | ★ 2,529 | ★ 4,949 |
| First released | 2009 | 2013 |
| Replaces | Nagios, Datadog | Nagios |
What are Checkmk and LibreNMS?
Checkmk
Checkmk is an IT monitoring system for servers, networks, applications, and cloud, known for auto-discovery and rule-based configuration. It targets IT teams monitoring sizeable environments. It is deployed via Docker or native packages.
- Powerful service auto-discovery
- Rule-based configuration
- Agent-based and SNMP checks
- Built-in dashboards
LibreNMS
LibreNMS is a fully featured network monitoring system with auto-discovery, alerting, and broad device support over SNMP. It targets network administrators monitoring many devices. It is deployed via Docker or a LAMP stack.
- Automatic network discovery
- Broad vendor and SNMP support
- Alerting and billing
- Distributed polling
Checkmk vs LibreNMS: key differences
Checkmk is written in Python, while LibreNMS is built with PHP. Licensing differs — GPL-2.0 for Checkmk versus GPL-3.0 for LibreNMS. Checkmk is the more established project (first released 2009), while LibreNMS arrived in 2013.
Why pick each one
Choose Checkmk if…
- Strong auto-discovery
- Scales well
- Good defaults
Watch out for
- Enterprise edition gates features
- Concepts take time to learn
Choose LibreNMS if…
- Great for network devices
- Strong auto-discovery
- Active community
Watch out for
- Network-focused
- Setup takes effort
Frequently asked questions
Is Checkmk or LibreNMS better?
Neither is universally better. LibreNMS has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Checkmk and LibreNMS free and open-source?
Yes. Checkmk is licensed under GPL-2.0 and LibreNMS under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Checkmk and LibreNMS with Docker?
Checkmk: yes. LibreNMS: yes.