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Checkmate vs Nezha: catalog facts
Checkmate	Nezha
Free Free and open source to self-host.	Free Free and open source.
Web, Self-hosted	Linux, Self-hosted
Combines uptime checks with server hardware monitoring Docker and Helm chart deployment options	Lightweight dashboard and agents SSL certificate expiry monitoring
You have to host and maintain it yourself No hosted version described in the research	Needs a server to host the dashboard Much of the community documentation is in Chinese
Self-hosted	Self-hosted
Open 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	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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