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Zentyal vs OpenLDAP: catalog facts
Zentyal	OpenLDAP
Paid Yearly or lifetime licences covering unlimited users, with a free 15-day trial.	Free Free, open-source software developed by the OpenLDAP community.
Linux, Self-hosted	Linux, Self-hosted, Command line
Active Directory compatible domain controller for Windows clients Mail, groupware and network services in one interface	Full LDAP server plus client libraries and command-line tools Separate feature and long-term support release series
Paid licence after the trial Aimed at small and mid-sized office servers rather than home use	No graphical management interface included Configuration and schema design take real LDAP knowledge
Self-hosted, Operating system	Downloadable app, Self-hosted
Closed 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 23, 2026

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