OpenNMS Horizon

Key features

• Fault and performance monitoring
• Flow analysis
• Event correlation
• Scales to large networks

Strengths

• Released under the AGPL-3.0 license
• First-class Docker support for quick deployment
• Active community (1.2k GitHub stars)
• Written in Java

Is OpenNMS Horizon secure?

No known vulnerabilities affect OpenNMS Horizon's latest release (opennms-36.0.4-1). OSV.dev lists 32 past advisories for the project; none of them applies to this release. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

• Most recent fixed advisory CVE-2026-89054, published 2026-09-10 (34 days ago), fixed in 36.0.4

Source: OSV.dev, checked 2026-10-14. How this is measured.

OpenNMS Horizon replaces

Health badge

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<a href="https://selfhostindex.com/app/opennms-horizon/"><img src="https://selfhostindex.com/badge/opennms-horizon.svg" alt="SelfHostIndex health score for OpenNMS Horizon"></a>

.. image:: https://selfhostindex.com/badge/opennms-horizon.svg
   :alt: SelfHostIndex health score for OpenNMS Horizon
   :target: https://selfhostindex.com/app/opennms-horizon/