OpenNMS Horizon vs Thruk
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
OpenNMS Horizon
Enterprise network management and monitoring platform
VS
Thruk
Multi-backend monitoring web interface for Nagios family
| Feature | OpenNMS Horizon | Thruk |
|---|---|---|
| Category | Monitoring & Status | Monitoring & Status |
| License | AGPL-3.0 | GPL-1.0 |
| Language | Java | Perl |
| Setup difficulty | Hard | Medium |
| Min. RAM | 4,096 MB | 512 MB |
| Deployment | docker, bare-metal | bare-metal, docker, source |
| GitHub stars | ★ 1,168 | ★ 439 |
| First released | 2000 | 2009 |
| Replaces | SolarWinds, PRTG | SolarWinds |
Why pick each one
Choose OpenNMS Horizon if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Active community (1.2k GitHub stars)
- Written in Java
Frequently asked questions
Is OpenNMS Horizon or Thruk better?
Neither is universally better. OpenNMS Horizon has the larger community, while Thruk is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are OpenNMS Horizon and Thruk free and open-source?
Yes. OpenNMS Horizon is licensed under AGPL-3.0 and Thruk under GPL-1.0. Both can be self-hosted at no software cost.
Can I run OpenNMS Horizon and Thruk with Docker?
OpenNMS Horizon: yes. Thruk: yes.