SyncToy was a freeware tool in Microsoft's PowerToys series that provided an easy-to-use graphical user interface for synchronizing files and folders in Windows versions XP, Vista, 7 and 10.

It provides a Browse option to find the folder or network share, or users can type it in directly.

SyncToy offers two safeguards to ensure that the user does not lose files permanently when they are deemed unnecessary during a sync.

Firstly, a user can preview what is going to happen when the sync takes place, without actually changing anything; secondly, any deleted files are optionally moved to the Recycle Bin.

These versions were written in Microsoft's .NET Framework but contained their own code for folder synchronization.