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Open Alert Viewer vs Alerta: catalog facts
Open Alert Viewer	Alerta
Free Free and open source under the MIT licence.	Free Free and open source.
Linux, Android	Web, Self-hosted, Command line
One view for Prometheus, Nagios, Icinga and Zabbix alerts Runs on both Android and Linux desktop	Deduplicates alerts from many monitoring sources Wide range of ready-made integrations
Zabbix support is partial Only Basic Authentication for most backends	Needs a server and database to run Homepage content has not been updated in some time
Downloadable app	Self-hosted
Open source	Open source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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