Microsoft Office was the "go to" for word processing and spreadsheets for many years, while Microsoft Office has evolved into Office 365 the world has not stood still! There are now many alternatives some of which are even free. Apple whilst being able to run MS Office has its own offering known as iWork, and comprising of Pages, Numbers and Keynote.
The BIG4 Office Applications
If you're looking for simple and FREE Office applications then either Open Office or Libre Office should do you fine. If you're on a Mac or iOS device then Apple's own offerings should do the trick as they integrate brilliantly into the operating system as you would expect from Apple.
A business or professional should probably go for Microsoft Office 365 on subscription basis as this also bundles cloud storage and exchange email services.
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