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Microsoft Entra ID vs Univention Corporate Server: catalog facts
Microsoft Entra ID	Univention Corporate Server
Paid Subscription service with a free trial.	Freemium Available to download; commercial subscriptions and support are sold by Univention.
Web	Linux, Self-hosted
Central cloud directory for user accounts Single sign-on to applications	Central identity and access management on your own servers VM images for VMware, VirtualBox, ESX and KVM
Cloud-only, tied to Microsoft's platform Aimed at organisations rather than individuals	A full server OS, so it needs a dedicated machine or VM Aimed at organisations rather than home users
Hosted service	Self-hosted, Operating system
Closed source	Open source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	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.