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Keep vs Open Alert Viewer: catalog facts
Keep	Open Alert Viewer
Free The open-source edition is free to self-host; the repository also contains an enterprise…	Free Free and open source under the MIT licence.
Web, Self-hosted	Linux, Android
Deduplicates and correlates alerts from several monitoring sources Docker Compose files for several deployment setups	One view for Prometheus, Nagios, Icinga and Zabbix alerts Runs on both Android and Linux desktop
Running it means operating your own server stack Some features sit in a separate enterprise folder	Zabbix support is partial Only Basic Authentication for most backends
Self-hosted	Downloadable app
Open source	Open source
License not stated	License: MIT
Not stated if an account is needed	No 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.