Naemon vs Thruk
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Naemon | Thruk |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 73 · Good | 74 · Good |
| Category | Monitoring & Status | Monitoring & Status |
| License | GPL-2.0 | GPL-1.0 |
| Language | C | Perl |
| Setup difficulty | Hard | Medium |
| Min. RAM | 256 MB | 512 MB |
| Deployment | bare-metal, source | bare-metal, docker, source |
| GitHub stars | ★ 173 | ★ 442 |
| First released | 2014 | 2009 |
| Replaces | SolarWinds, PRTG | SolarWinds |
What are Naemon and Thruk?
Naemon
Naemon is a host and service monitoring tool based on the Nagios core, designed for improved performance and modern features. It checks the availability of resources and alerts on outages.
- Nagios-compatible checks
- Improved performance
- Livestatus query interface
- Large plugin compatibility
Thruk
Thruk is a multi-backend monitoring web interface compatible with Nagios, Icinga, Naemon, and Shinken. It provides a fast UI for managing many monitoring instances from one place.
- Multi-backend support
- Fast monitoring UI
- Reporting and SLA tools
- Business process modeling
Naemon vs Thruk: key differences
Naemon is written in C, while Thruk is built with Perl. Licensing differs — GPL-2.0 for Naemon versus GPL-1.0 for Thruk. Naemon is the lighter option, starting around 256 MB of RAM against 512 MB for Thruk. Thruk is the more established project (first released 2009), while Naemon arrived in 2014. Thruk has the considerably larger community, at 442 GitHub stars versus 173. Thruk lists first-class Docker deployment; Naemon does not.
Why pick each one
Choose Naemon if…
- Faster than classic Nagios
- Reuses Nagios plugins
Watch out for
- Text-file configuration
- Needs add-ons for a modern UI
Choose Thruk if…
- Unifies many monitoring cores
- Mature and stable
Watch out for
- Requires a Nagios-family core
- Dated styling
Frequently asked questions
Is Naemon or Thruk better?
Thruk is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Naemon if its specific feature set fits your needs better.
Are Naemon and Thruk free and open-source?
Yes. Naemon is licensed under GPL-2.0 and Thruk under GPL-1.0. Both can be self-hosted at no software cost.
Can I run Naemon and Thruk with Docker?
Naemon: check the project docs for container support. Thruk: yes.
Which is lighter on resources, Naemon or Thruk?
Naemon has the smaller minimum footprint at 256 MB of RAM, compared to about 512 MB for Thruk. Real-world usage depends on library size, user count, and enabled features.