Reviewing Mozy again after almost a decade is like coming home. After all, it was the online backup service the pretty much got the ball rolling with 2GB of free storage—back when 2GB covered most people's needs. Times have changed and data sets have ballooned, but with Dell EMC behind it, Mozy is still one of the most confidence-inspiring online backup services available. Check out its competition in our comprehensive online backup roundup.
Probably the nicest thing about Mozy is that it both backs up and provides the sync folder functionality that you get with Google, OneDrive, Dropbox, and the like. It's not as versatile overall as iDrive, but it does cover the two most important roles. Clients are provided for Windows, OS X, and Linux (Pro only), as well as Android and iOS.