Beszel vs OpenNMS Horizon

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?
FeatureBeszelOpenNMS Horizon
CategoryMonitoring & StatusMonitoring & Status
LicenseMITAGPL-3.0
LanguageGoJava
Setup difficultyEasyHard
Min. RAM128 MB4,096 MB
Deploymentdocker, binarydocker, bare-metal
GitHub stars★ 24,108★ 1,168
First released20242000
ReplacesUptimeRobotSolarWinds, PRTG

Why pick each one

Choose Beszel if…

  • Extremely lightweight
  • Simple multi-host view
  • Easy setup
Beszel details

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
OpenNMS Horizon details

Frequently asked questions

Is Beszel or OpenNMS Horizon better?

Beszel is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider OpenNMS Horizon if its specific feature set fits your needs better.

Are Beszel and OpenNMS Horizon free and open-source?

Yes. Beszel is licensed under MIT and OpenNMS Horizon under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run Beszel and OpenNMS Horizon with Docker?

Beszel: yes. OpenNMS Horizon: yes.

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