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Zitadel vs Kanidm: catalog facts
Zitadel	Kanidm
Freemium Open source for self-hosting, with a hosted service that has a free starting plan and paid…	Free Free and open source.
Web, Self-hosted	Linux, Self-hosted, Command line
Self-hostable, with deployment documentation Built-in MFA, passwordless and social login	OAuth2, LDAP and passkeys in a single server Unix integration for Linux logins
Aimed at developers integrating identity into applications Running it yourself means operating an identity service	Smaller ecosystem than long-established directory servers Requires running and securing your own server
Self-hosted, Hosted service	Self-hosted
Open source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it 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 23, 2026

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