Microsoft Office 64-bit is powered by the cloud so you can access your documents anytime, anywhere, and on any device. It's unmistakably Office - but thoughtfully designed to take advantage of the unique features of the Windows. Microsoft Office is an office suite of desktop applications, servers and services for the Microsoft Windows and Mac OS X operating systems, introduced by Microsoft. The new Microsoft Office includes updated versions of Word, Excel, PowerPoint, OneNote and Outlook and the moment you open any one of the apps, you'll immediately feel the difference. A refreshed task pane interface makes positioning, resizing, or rotating graphics easy so you can create exactly the layout you want. And new themes and styles help you pull it all together to produce stunning, professional documents. You can download Microsoft Office for PC offline installer from site by clicking on free download button.
See what's new in the Microsoft Office 2016 apps:
Working together just got easier
Office 2016 makes it easier to share documents and work with others at the same time. See others' edits with coauthoring in Word, PowerPoint, and OneNote. Improved version history lets you refer back to snapshots of a document during the editing process. Share right from your document with a click of a button. Or use the new modern attachments in Outlook—attach files from OneDrive and automatically configure permission without leaving Outlook. Review, edit, analyze, and present your Office 2016 documents across any of your devices—from your PC or Mac to your Windows, Apple®, and Android™ phones and tablets.
Works for you
Stay on task with Office 64-bit with new, faster ways to achieve the results you want. Simply tell Word, Excel, or PowerPoint what you want to do, and Tell Me will guide you to the command. Smart Lookup uses terms you highlight and other contextual information in the document to deliver search results from the web, all within the document. Use one-click forecasting to quickly turn your historical data into an analysis of future trends. New charts help you visualize complex data.
Office moves with you
From work to your favorite café, stay connected to what's important—friends, family, and projects across all of your devices. Use touch for reading, editing, zooming, and navigation. Write notes or make annotations using digital ink. Easily save to your cloud storage and switch from one device to the next without missing a beat. Office apps pick up right where you left off, regardless of the device you were using.
Perfect with Windows 10
Office 2016 plus Windows 10 is the world's most complete solution for getting things done. Say 'Hello' just once and Windows will log you into your PC and Office—all in one simple step. Bring Cortana to your Office to help you get things done. Let Cortana with Office 365 integration help with tasks like meeting prep. Office Mobile apps on Windows 10 are touch-friendly, fast, and optimized for on-the-go-productivity.
Best Office value
Office 365 flexible subscription plans let you pick the option that's right for you. Choose an individual plan or one for the whole household. Office 365 includes the new Office 2016 apps for PC and Mac, like Word, Excel, PowerPoint, Outlook, and OneNote. OneDrive keeps you connected to what's important—friends, family, projects, and files—anywhere, on any device. Need help with Office 2016? Each subscriber to Office 365 gets free tech support from Microsoft-trained experts.
Note: 30 days trial version (Signup Required). Requires .NET Framework.
Also Available: Download Microsoft Office for Mac

UPDATE: you can now download & customize the Office 365 e Office 2016 setup & installation files using the Office Configuration Tool and the Office Deployment Tool: to know more about that, read this post.