Microsoft Word is, simply put, the alpha and omega of word processing, and one of the key apps in Microsoft Office 365. I will find it on every kind of computer in every kind of setting, and now it’s available for free on Android. Word plugs into Microsoft’s cloud infrastructure to keep my documents in order, but its main selling point is that this really is Word. What I make on my phone will look exactly the same on the desktop. For the worker on the go, it’s essential.