Compare software

Univention Corporate Server vs Zentyal: catalog facts
Univention Corporate Server	Zentyal
Freemium Available to download; commercial subscriptions and support are sold by Univention.	Paid Yearly or lifetime licences covering unlimited users, with a free 15-day trial.
Linux, Self-hosted	Linux, Self-hosted
Central identity and access management on your own servers VM images for VMware, VirtualBox, ESX and KVM	Active Directory compatible domain controller for Windows clients Mail, groupware and network services in one interface
A full server OS, so it needs a dedicated machine or VM Aimed at organisations rather than home users	Paid licence after the trial Aimed at small and mid-sized office servers rather than home use
Self-hosted, Operating system	Self-hosted, Operating system
Open source	Closed source
License not stated	License not stated
Not stated if an account is 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.