Office 365 and Office 2016 share a lot of similarities, but deciding between the two involves a lot of factors. Office 365 is a subscription-based service that currently uses Office 2016 apps. For Office for Mac, you can have up to 25 licenses associated with the same Microsoft account: only one license for an Office 365 subscription and multiple one-time-use installs of Office for Mac Home and Student or Home and Business.

This week, arrives for Windows and the software is a major upgrade to the previous versions of Microsoft's productivity suite. If you're eager to use the new apps, they are available now, but first, you have to figure out how you'll purchase them. Long gone are the days of grabbing a box of CDs at the store -- today, subscriptions are the norm, but they're not the only way to buy. Because of that, you get several different ways to buy Office 2016, and you'll be forgiven if you don't know which one to pick. Microsoft doesn't exactly make it simple to tell the difference between your choices. To make the decision a bit easier, this guide will go over the three different ways to use Office and what you get with each pick. Josh Miller/CNET Option 1: Office.com and Office Mobile apps -- Free provides completely free, but slightly limited, online-only versions of Word, Excel, PowerPoint, Outlook and other tools.

Around since 2010, the website has largely flown under the radar, overshadowed by the desktop versions of Office. All you need to use it is a free Microsoft account, which you get.

(Of course, if you already use nearly any Microsoft product -- Skype, OneDrive, Xbox Live -- you already have one.). Using Office.com, you can edit and create new documents, spreadsheets and slideshows, using many of the same features you'd get with Office on the desktop. In many ways, it's similar to Google Docs, which is also exclusively online and free with a Google account.

With free comes a few limitations. First, the online tools are missing some advanced features you get with the full versions, like tracking changes in Word, advanced chart types in Excel and many slide transitions in PowerPoint. The other big drawback is that you cannot open and edit files that live on your computer. In order to open a file through Office.com, you'll need to store it in either OneDrive or Dropbox first.

Luckily, you can easily save a copy of a file you create or edit to your computer without any hassle. Any changes you make are also automatically saved in OneDrive. When you're away from a computer, you can also use the free Office mobile apps for,. Like the browser-based version, these apps have all the basic Word, Excel and PowerPoint features, with some limitations. If you have an Office 365 (see below), you'll unlock all of the apps' tools. How to get c++ on visual studio 2017 for mac. Office.com has free online-only versions of the Office apps. Screenshot by Sarah Mitroff/CNET Option 2: Office 365 -- Subscription is a monthly or yearly memberships that gets you the full desktop versions of Office, plus, email with Outlook, and a bunch of extras.