List of collaborative software Comparison Comparison

| Name_ | Mail_transfer_agent | Mail_storage_type | IMAP_server | IMAP_shared | Calendar_format | Calendar_shared | IM_server | WebDAV | Web_UI | Contacts_shared | Files_shared | Web_admin_UI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zarafa | Postfix , Exim , Qmail , Sendmail , others | MySQL , optional attachments on filesystem | Yes | Public Folder available | Outlook , Webaccess, iCal , Z-Merge | Outlook , Webaccess, Z-Merge | No | No | Yes | Yes | No | Yes |
| Zimbra | Custom Postfix | Mail Dir w/ index db | Custom | No | iCal | ICAL | (Removed in v8) | Yes | Yes | Yes | Yes | Yes |
| Name | Mail transfer agent | Mail storage type | IMAP server | IMAP shared | Calendar format | Calendar shared | IM server | WebDAV | Web UI | Contacts shared | Files shared | Web admin UI |