FreeFileSync

FreeFileSync is an Open-Source folder comparison and synchronization tool. It is optimized for highest performance and usability without restricted or overloaded UI interfaces.
this little app keep all the watched folder totally the same.

Not like another sync software that if you rename a file with this FreeFileSync you will rename a file in another pair folder, while the other sync software will make two file (the file before and after rename will exist both) and it can do deletion sync on both pair folder.

Not Only that FreeFileSync can create a batch job to make synchronization go with just one double click on the "*.ffs_batch" file, and with Realtime Sync you will keep both folder sync automatically with only one time configuring the app.

In my opinion this is the best from all kind of Sync software

How To Set Realtime Sync with FreeFileSync Ver 3.14 Tutorial for newbie

You can download it here
FreeFileSync Ver 3.14

Megaupload Link
FreeFileSync Ver 3.14