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Checkmate vs Monika: catalog facts
Checkmate	Monika
Free Free and open source to self-host.	Free Free and open source.
Web, Self-hosted	Self-hosted, Command line
Combines uptime checks with server hardware monitoring Docker and Helm chart deployment options	Configuration in a single YAML file Alerts on slow responses as well as downtime
You have to host and maintain it yourself No hosted version described in the research	Command-line only, with no built-in dashboard You run and keep it online yourself
Self-hosted	Downloadable app, 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 October 2, 2026

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