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gatus vs Upptime: catalog facts
gatus	Upptime
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source. Hosting, hardware and any external services are separate.
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…	Stores monitoring history in Git Publishes an automatically updated status page
Configuration is file-based with no editing interface, so changes mean redeploying the config.	Depends on GitHub service availability and Actions usage limits.
Self-hosted	Self-hosted, Web application
Open source	Open source
License: Apache-2.0	License: MIT
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 22, 2026

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