Leaf Sync

Leaf Sync is a smart and efficient file synchronization tool, If you want to
   1) synchronize updated files between two folders,
   2) skip some folders/files which contains specific prefix or suffix when synchronizing ( support many kinds of filters, e.g. RegEx),
   3) only synchronize the small or big files,
   4) synchronize files in a single direction.
You will love this app, enjoy it.