ECO enables Outlook to sync with cloud calendar services like iCloud, Google, Outlook.com (Windows Live Hotmail), 163, QQ, MIUI, Toodledo,and Yahoo! as well as on-premises servers such as MAC OS X Server, Baikal, EVO, Zimbra, SOGo, Synology, Kolab, DaviCAL, MailEnable, Kerio Connect, and ownCloud.
Outlook can synchronize with Exchange through ActiveSync for Contact/Calendar/Task. However, most services on the cloud use CardDAV/CalDAV protocols. In other words, Outlook is not able to synchronize with those services at all under normal circumstance. ECO enables Outlook to sync with cloud calendar services like iCloud, Google, Outlook.com (Windows Live Hotmail), 163, QQ, MIUI, Toodledo,and Yahoo! as well as on-premises servers such as MAC OS X Server, Baikal, EVO, Zimbra, SOGo, Synology, Kolab, DaviCAL, MailEnable, Kerio Connect, and ownCloud. ECO is also capable to duplicate your Contacts, Calendars and Tasks from cloud A to cloud B such as from iCloud to Gmail. Also, you can upload your local Outlook Contacts, Calendars and Tasks to your collaboration service on the cloud.
Download and use it now: EVO Collaborator for Outlook