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Kanidm vs 389 Directory Server: catalog facts
Kanidm	389 Directory Server
Free Free and open source.	Free Free and open source.
Linux, Self-hosted, Command line	Linux, Self-hosted
OAuth2, LDAP and passkeys in a single server Unix integration for Linux logins	Multi-supplier replication for scaling and fail-over Proven in very large deployments
Smaller ecosystem than long-established directory servers Requires running and securing your own server	Linux only Requires LDAP knowledge to run well
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License not stated	License not stated
No account 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 24, 2026

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