Network Monitoring Software Trusted by
Comprehensive network monitoring software
Scalable
Dynamic scalability for data processing. Monitor tens of thousands of data points via a distributed and tiered system.
Extensible
Event-driven architecture allows extension of service polling and data collection frameworks, and flexible workflow integration.
Supported
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.
Latest blog posts
Provisioning from the Karaf shell in Meridian 2026
Meridian 2026 ships a new set of Karaf shell commands for working with provisioning requisitions, foreign source definitions, and detectors. Until [...]
Meridian 2026: An Architectural Leapfrog
Meridian 2026 is the largest architectural step we have taken in years. The changes land in two places that shape everything we ship in [...]
Introducing LLM-Based Alarm Correlation and Root Cause Analysis for OpenNMS ALEC
It is 11:17 PM. A single fiber degrades on an edge router, and within seconds your console lights up: an optical power alarm, two [...]



