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389 Directory Server vs Kanidm: catalog facts
389 Directory Server	Kanidm
Free Free and open source.	Free Free and open source.
Linux, Self-hosted	Linux, Self-hosted, Command line
Multi-supplier replication for scaling and fail-over Proven in very large deployments	OAuth2, LDAP and passkeys in a single server Unix integration for Linux logins
Linux only Requires LDAP knowledge to run well	Smaller ecosystem than long-established directory servers Requires running and securing your own server
Downloadable app, Self-hosted	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 24, 2026	Official website Full listing and sources Checked September 23, 2026

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