Many new enhancements are made in this release with a sleeker look and feel. With the passage of time, Microsoft is improving its office suite. Microsoft Office Pro 2013 is a productive suite which has many new features and design changes. Microsoft Office Professional 2013 Overview This free download of Office Pro 2013 is a complete ISO Image installer for Windows 32bit and 64bit. Microsoft Office Professional 2013 is the most popular and fully features office suite.