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Prometheus Alertmanager vs Keep: catalog facts
Prometheus Alertmanager	Keep
Free Free and open source as part of the Prometheus project.	Free The open-source edition is free to self-host; the repository also contains an enterprise…
Self-hosted	Web, Self-hosted
Groups hundreds of related alerts into one notification Silencing and inhibition to cut alert noise	Deduplicates and correlates alerts from several monitoring sources Docker Compose files for several deployment setups
Configured through files rather than a full graphical interface Designed around Prometheus and its alerting rules	Running it means operating your own server stack Some features sit in a separate enterprise folder
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
No account 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 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.