zimbra collaboration
Open source server and client technology for next-generation enterprise messaging and collaboration (email, group calendar, contacts, etc). End-user benefits include:
- Browser based AJAX client with search, shared calendar and mail that is integrated with contacts and calendar.
- Support for Outlook, iCal, App.Mail, contacts and offline mode.
- Support of Apple, Windows, and Linux operating systems.

Administrator Benefits:
- Online move, back-up, and recovery of individual or a group of mailboxes.
- Compatibility with existing LDAP directories.
- Native hierarchical storage management and clustering.
- Web services integration with existing enterprise applications.
- Integrated anti-spam and anti-virus.

download the open source edition

download network edition