Microsoft offers completely free web versions of Word, Excel, PowerPoint, and OneNote at Office.com. They lack advanced macros and some formatting options, but for 80% of users, they are sufficient. Saves automatically to OneDrive (5GB free).

It uses a corporate "master key" that allows for multiple installations.

It’s been over a decade since Microsoft Office 2010 hit the shelves, yet it remains one of the most beloved versions of the productivity suite ever released. For many users, the "Ribbon" interface in the 2010 version was the perfect balance of functionality and simplicity before the design shifts of Office 2013 and 2016 took over.

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