It also allows integration with Microsoft Communicator for Mac 2011 messaging services Outlook 2011 replaces Entourage, which is included in Office 2004 and Office 2008 for Mac versions. The Outlook application returns to the Mac suite written by the Mac OS X Cocoa API for the first time since 2001 and is now fully compatible with Microsoft Exchange Server 2007. Its interface is now more similar to versions of Office 2007 and Office 2010 for Windows by including the toolbar in ribbon format.
