ZITADEL
Open-source identity infrastructure from Switzerland with built-in multi-tenancy and passwordless login. Self-host it or run it on Swiss-hosted cloud.
Quick facts
Multi-tenancy and passwordless login are built in from the start rather than bolted on later, and self-hosting is a real option if you don't want to depend on their cloud.
It's a newer, smaller project than established identity platforms like Auth0, so the ecosystem of guides, integrations and community support is still catching up.
Why does it score 82?
Incorporated in St. Gallen, Switzerland – an EFTA country rather than a full EU member state.
Venture-backed, but no single non-EU company holds a controlling stake.
ZITADEL runs on Swiss-hosted cloud infrastructure, and the open-source version can be self-hosted anywhere you choose.
Fully open source (Apache 2.0) and GDPR-compliant – the entire identity stack is auditable rather than a black box.
See how they compare
ZITADEL
Okta 
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