Microsoft has released a preview version of Microsoft Office for Mac. You can download it for free here: https://products.office.com/en-US/mac/mac-preview .
Torrent (not Microsoft official) is here: http://tylxr.com/microsoft-office-2016-for-mac-dowload-torrent/
Office 2016 for Mac includes: Word, Excel, PowerPoint, Outlook and OneNote. The GUI looks very much the same as in Office 2013 (for Windows). Office 2016 for Mac runs on OS X 10.10 Yosemite.