Best Sync Program for Mac

[JeffPalmer]

I used Sync Mate for Syncing program
but it's doubling every time syncronize

is there any Suggestion?

[son_of_olaf]

I use Syncmate (there is a free and pay version).

www.apple.com/downloads/macosx/productivity_tools/syncmate.html (http://www.apple.com/downloads/macosx/productivity_tools/syncmate.html)