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389 Directory Server vs Univention Corporate Server: catalog facts
389 Directory Server	Univention Corporate Server
Free Free and open source.	Freemium Available to download; commercial subscriptions and support are sold by Univention.
Linux, Self-hosted	Linux, Self-hosted
Multi-supplier replication for scaling and fail-over Proven in very large deployments	Central identity and access management on your own servers VM images for VMware, VirtualBox, ESX and KVM
Linux only Requires LDAP knowledge to run well	A full server OS, so it needs a dedicated machine or VM Aimed at organisations rather than home users
Downloadable app, Self-hosted	Self-hosted, Operating system
Open source	Open source
License not stated	License not stated
No account needed	Not stated if an account is 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.