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Naemon vs Zabbix: catalog facts
Naemon	Zabbix
Free Free community project.	Free Free and open source under the AGPL. Support and services are paid.
Linux, Self-hosted	Linux, Web, Self-hosted
Drop-in successor for Nagios users Bug fixes and performance work on the Nagios 4 core	Scales to tens of thousands of monitored devices with proxies Large template library covering common hardware and services
Configuration follows the older Nagios style Needs a server to run on	Configuration is extensive; the learning curve is real Interface density makes simple setups feel heavy
Self-hosted	Self-hosted
Open source	Open source
License not stated	License: AGPL-3.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 22, 2026

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