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SOGo vs EGroupware: catalog facts
SOGo	EGroupware
Free Free and open source; paid premium support is offered separately.	Freemium Free Community Edition; the EPL edition and cloud hosting are paid.
Web, Self-hosted	Web, Self-hosted
Webmail, calendars and contacts in one self-hosted server CalDAV, CardDAV and ActiveSync support for native and mobile clients	Wide feature set from email and calendar to CRM and helpdesk Can be self-hosted or used as a German-hosted cloud service
Needs existing mail and directory servers to integrate with Outlook support depends on a separate CalDAV synchronizer	Some features are reserved for the paid EPL edition A large suite to set up and maintain on your own server
Self-hosted	Web application, Self-hosted, Hosted service
Open source	Open source
License: GPL-2.0-or-later / LGPL-2.0-or-later	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 23, 2026	Official website Full listing and sources Checked October 2, 2026

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