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Univention Corporate Server vs 389 Directory Server: catalog facts
Univention Corporate Server	389 Directory Server
Freemium Available to download; commercial subscriptions and support are sold by Univention.	Free Free and open source.
Linux, Self-hosted	Linux, Self-hosted
Central identity and access management on your own servers VM images for VMware, VirtualBox, ESX and KVM	Multi-supplier replication for scaling and fail-over Proven in very large deployments
A full server OS, so it needs a dedicated machine or VM Aimed at organisations rather than home users	Linux only Requires LDAP knowledge to run well
Self-hosted, Operating system	Downloadable app, 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 24, 2026	Official website Full listing and sources Checked September 24, 2026

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