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Zitadel vs LemonLDAP::NG: catalog facts
Zitadel	LemonLDAP::NG
Freemium Open source for self-hosting, with a hosted service that has a free starting plan and paid…	Free Free software with no licence cost.
Web, Self-hosted	Self-hosted
Self-hostable, with deployment documentation Built-in MFA, passwordless and social login	Supports CAS, SAML and OpenID Connect Can bridge between different SSO protocols
Aimed at developers integrating identity into applications Running it yourself means operating an identity service	Self-hosted server that needs administration Setup involves several components
Self-hosted, Hosted service	Self-hosted
Open source	Open source
License not stated	License: GPL-2.0
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 October 1, 2026

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