Grafana Loki 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?
FeatureGrafana LokiOpenNMS Horizon
CategoryMonitoring & StatusMonitoring & Status
LicenseAGPL-3.0AGPL-3.0
LanguageGoJava
Setup difficultyMediumHard
Min. RAM512 MB4,096 MB
Deploymentdocker, kubernetes, helmdocker, bare-metal
GitHub stars★ 28,687★ 1,168
First released20182000
ReplacesSplunk, Datadog LogsSolarWinds, PRTG

Why pick each one

Choose Grafana Loki if…

  • Cheap to run compared to full-text indexers
  • Familiar Prometheus-style labels
Grafana Loki 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 Grafana Loki or OpenNMS Horizon better?

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

Are Grafana Loki and OpenNMS Horizon free and open-source?

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

Can I run Grafana Loki and OpenNMS Horizon with Docker?

Grafana Loki: yes. OpenNMS Horizon: yes.

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