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Nagios XINaemon
Paid

Perpetual license priced per monitored node, with a 30-day free trial.

 Free

Free community project.

Self-hosted Linux, Self-hosted
  • Monitors servers, network devices and applications from one self-hosted install
  • Web config wizard and dashboards simplify setup compared to raw Nagios Core
  • Drop-in successor for Nagios users
  • Bug fixes and performance work on the Nagios 4 core
  • Perpetual per-node licensing can get expensive as infrastructure grows
  • Proprietary layer on top of Nagios Core, so it is not itself open source
  • Configuration follows the older Nagios style
  • Needs a server to run on
Self-hosted, Downloadable app Self-hosted
Closed source Open source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 24, 2026

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