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SolarWinds Network Performance Monitor vs OpenNMS: catalog facts
SolarWinds Network Performance Monitor	OpenNMS
Paid Commercial license sold directly by the vendor rather than offered as a free product.	Freemium Open source core (Horizon) is free, with a paid enterprise edition (Meridian).
Self-hosted	Self-hosted
NetPath and intelligent maps give deep visibility into network paths Long-established, widely deployed product in enterprise IT	Carrier-grade design proven at large enterprise scale Event correlation and Grafana integration for deeper visualization
Commercial licensing makes it a significant cost for smaller organizations Self-hosted deployment requires dedicated infrastructure to run	Complexity suited to large networks may be overkill for small setups Paid tiers are needed for enterprise support and advanced features
Self-hosted, Downloadable app	Self-hosted, Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.