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Checkmk vs Zabbix: catalog facts
Checkmk	Zabbix
Freemium Free open-source Raw edition, with paid Enterprise and Cloud editions.	Free Free and open source under the AGPL. Support and services are paid.
Self-hosted	Linux, Web, Self-hosted
Auto-discovery reduces manual setup for new hosts and services Supports both agent-based and agentless SNMP monitoring	Scales to tens of thousands of monitored devices with proxies Large template library covering common hardware and services
Advanced features and scaling are gated behind paid commercial editions Self-hosted setup and tuning takes more effort than a hosted SaaS monitor	Configuration is extensive; the learning curve is real Interface density makes simple setups feel heavy
Self-hosted, Downloadable app	Self-hosted
Open source	Open source
License not stated	License: AGPL-3.0
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.