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Checkmate vs Wormly: catalog facts
Checkmate	Wormly
Free Free and open source to self-host.	Paid Paid service with a free trial that needs no email or credit card to start.
Web, Self-hosted	Web
Combines uptime checks with server hardware monitoring Docker and Helm chart deployment options	Monitors HTTP and any TCP/IP service, including IPv6 Escalating alert rosters for teams
You have to host and maintain it yourself No hosted version described in the research	Hosted service with an ongoing cost More than a single small site usually 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 October 2, 2026

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