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Zimbra vs tine Groupware: catalog facts
Zimbra	tine Groupware
Paid Sold in several editions under Zimbra's license terms; see the edition comparison.	Free Open-source software; the research does not detail any paid offerings.
Web, Self-hosted	Web, Self-hosted
Mail, calendar and contacts in one web client Can be run on your own servers	Email, calendar, contacts and tasks in one platform Resource planning for shared appointments
Aimed at organisations rather than individuals Running a mail server takes administration effort	Website and documentation mostly in German Aimed at organisations rather than individual users
Self-hosted, Hosted service	Self-hosted
Closed source	Open 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 October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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