Microsoft Synctoy is a must-have utility to help you synchronize files in different directories of the same computer or between a computer and external storage devices like the iPod and USB pen drives.

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As in the figure above, you first select a pair of folders that you want to keep in Sync via Synctoy. Then decide the action – should the two folders be clones or only the new files have to be copied ?

SyncToy supports wild-cards in file names (like *.exe or holiday_*.jpg) so you can decide what files are included or excluded during the sync process.

And using SyncToy is completely risk free – it has a wonderful preview feature that lets you see what operations would take place during the run without performing any changes on your computer.

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SyncToy v2.0 [for Windows XP and Vista]

*If you were to sync files and folders on multiple computers via the internet, consider FolderShare – it can also sync files between a Mac and Windows computer.