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Open Alert Viewer vs Unofficial CheckMK Monitoring: catalog facts
Open Alert Viewer	Unofficial CheckMK Monitoring
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-2.0 licence.
Linux, Android	Android
One view for Prometheus, Nagios, Icinga and Zabbix alerts Runs on both Android and Linux desktop	Dashboard of host and service states Notifications when states change
Zabbix support is partial Only Basic Authentication for most backends	Requires an existing CheckMK server and login Unofficial, not supported by the CheckMK vendor
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-2.0-or-later
No account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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