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gatus vs Checkmate: catalog facts
gatus	Checkmate
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source to self-host.
Linux, Self-hosted, Web	Web, Self-hosted
Checks are declared in one YAML file with conditions on status code, response time and body content, and…	Combines uptime checks with server hardware monitoring Docker and Helm chart deployment options
Configuration is file-based with no editing interface, so changes mean redeploying the config.	You have to host and maintain it yourself No hosted version described in the research
Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License not stated
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 23, 2026

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