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Checkmate vs Site24x7: catalog facts
Checkmate	Site24x7
Free Free and open source to self-host.	Freemium Free and paid monitoring plans, with a 30-day free trial.
Web, Self-hosted	Web
Combines uptime checks with server hardware monitoring Docker and Helm chart deployment options	Covers websites, servers, networks, applications and cloud in one service Alerts through several notification channels
You have to host and maintain it yourself No hosted version described in the research	Hosted service only; monitoring data lives with the vendor Broad enterprise feature set can be more than a small site needs
Self-hosted	Hosted service
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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