Compare software

Zentyal vs SOGo: catalog facts
Zentyal	SOGo
Paid Yearly or lifetime licences covering unlimited users, with a free 15-day trial.	Free Free and open source; paid premium support is offered separately.
Linux, Self-hosted	Web, Self-hosted
Active Directory compatible domain controller for Windows clients Mail, groupware and network services in one interface	Webmail, calendars and contacts in one self-hosted server CalDAV, CardDAV and ActiveSync support for native and mobile clients
Paid licence after the trial Aimed at small and mid-sized office servers rather than home use	Needs existing mail and directory servers to integrate with Outlook support depends on a separate CalDAV synchronizer
Self-hosted, Operating system	Self-hosted
Closed source	Open source
License not stated	License: GPL-2.0-or-later / LGPL-2.0-or-later
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 23, 2026

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