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SolarWinds Network Performance Monitor vs Nagios XI: catalog facts
SolarWinds Network Performance Monitor	Nagios XI
Paid Commercial license sold directly by the vendor rather than offered as a free product.	Paid Perpetual license priced per monitored node, with a 30-day free trial.
Self-hosted	Self-hosted
NetPath and intelligent maps give deep visibility into network paths Long-established, widely deployed product in enterprise IT	Monitors servers, network devices and applications from one self-hosted install Web config wizard and dashboards simplify setup compared to raw Nagios Core
Commercial licensing makes it a significant cost for smaller organizations Self-hosted deployment requires dedicated infrastructure to run	Perpetual per-node licensing can get expensive as infrastructure grows Proprietary layer on top of Nagios Core, so it is not itself open source
Self-hosted, Downloadable app	Self-hosted, Downloadable app
Closed source	Closed 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.