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Enterprise Class Open Source Network Management
OpenNMS: built for scalability, integration, and high levels of configuration since 2000.

The OpenNMS Group Product Suite
Get OpenNMS products straight from the source. Purchasing through the OpenNMS Group provides inside access to the development and consulting team that maintains the project.
Meridian by OpenNMS
Love open source but hate dealing with rapid releases and constant changes?
Developed for enterprises and business looking for a stable network management platform with long term support, OpenNMS Meridian is a stable version of OpenNMS released on an 12 to 18 month interval.
Blog

OpenNMS On the Horizon – Kafka, Karaf, Newts, Time-Series, Nephron, Flows, Minion, BMP, Measurements API, Selenium Monitor, ReST, UI
In the last week we did a ton more bugfixing and enhancements related to Kafka, the Karaf CLI, Newts, Time-Series Metadata, Nephron, Flows, Minion, BMP, the measurements API, the Selenium monitor, ReST, and the web UI.
OpenNMS On the Horizon – Performance, Selenium, Time-Series Storage, Kafka, Minion, Documentation, Flow QoS/ToS, BMP, Cassandra, Newts, UI, Helm
In the last week we worked on performance improvements, the Selenium monitor, time-series storage and instrumentation, Kafka SSL, Minion config and heartbeat, documentation, flow QoS/ToS, BMP, cloud Cassandra for Newts, UI fixes, and Helm.
How to: Set up Distributed Monitoring with OpenNMS
Large, distributed networks can be difficult to reach and monitor from a central location, with [...]
April 2021 Releases – Horizon 27.1.1, Meridians 2018.1.27, 2019.1.18, and 2020.1.7
In April, we released updates to all OpenNMS versions under active support.