SOGo
Open SourceSOGo is a powerful open-source groupware server designed for scalability and simplicity. It provides a comprehensive suite of collaborative features including webmail, calendaring, contact management, and task management, with strong support for standard protocols like CalDAV and CardDAV.
Key Features
-
Open-source with no per-user licensing costs.
-
Strong support for CalDAV, CardDAV, and IMAP for broad client compatibility.
-
Comprehensive webmail, calendar, and contact management features.