When you use a Windows computer, you usually might want to back up your important files to avoid losing data after sudden system failures.
SyncToy is a freeware syncing application from Microsoft, and it was a part of PowerToys series. It offers an easy-to-use graphical user interface for syncing files and folders between locations.
In order to use this tool, users have to select a left folder that works as a source and a right folder that works as a destination. Great thing about this application is that you can choose any folder to be your destination or source folder.
To install SyncToy on Windows 10, visit Microsoft Download Center, download the version matching your system, and run the setup.

To start synchronizing, double-click SyncToy, click Create New Folder Pair
, select Left Folder and Right Folder, choose a sync method (Synchronize, Echo, or Contribute), and click Run.