New: Meridian 2021
Meridian 2021

Comprehensive monitoring tools in one platform


Dynamic scalability for data processing. Monitor tens of thousands of data points via a distributed and tiered system.


Event-driven architecture allows extension of service polling and data collection frameworks, and flexible workflow integration.


Supported by a large community of users and commercially by The OpenNMS Group.

Open Source

Published under the AGPLv3 license, OpenNMS is a fully open source solution.

Subscription service that provides access to an optimized and very stable version of OpenNMS that maximizes the platform’s value and minimizes the effort required to maintain it.


Free, community-supported, quick release distribution that contains all of the newest features developed for the platform.


Feature List

Horizon or Meridian?



How to: Contribute to OpenNMS

By |September 2nd, 2021|

Submitting issues, fixing bugs, contributing features, enhancements, and extensions, writing documentation, or reporting security issues are all valuable ways that our community helps [...]

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