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FHEM vs openHAB: catalog facts
FHEM	openHAB
Free Free and open source under the GPL.	Free Free and open source. Hosting, hardware and any external services are separate.
Self-hosted	Linux, Windows, macOS, Android, Self-hosted
Over 430 modules for many protocols Automatic device and log creation	Rules can respond to schedules, sensor changes and events Bindings connect supported devices and services
Needs an always-on server and extra radio hardware Configuration is technical	Device support depends on the available bindings and sometimes on a vendor cloud.
Self-hosted	Self-hosted
Open source	Open source
License: GPL	License: EPL-2.0
No account needed	Not stated if an account is needed
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 22, 2026

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