Synchronize! for Mac

From Qdea:

Synchronize! automatically keeps the documents on two or more Macs up to date, by copying the newest version of those documents to the other Mac. It makes sure your desktop Mac and your PowerBook, or your Mac at home, have the most recent versions of your documents.Using Synchronize!, all you do is select two folders on your desktop. Synchronize! identifies documents which correspond between the two folders and copies the newest document to the other folder.Use a floppy disk to carry your files from one Mac to another, or use File Sharing and a network connection, or Apple Remote Access. Synchronize! makes sure that the newest versions of your documents are in both folders, no matter where you changed them last!For example, you can use Synchronize! to connect to a remote network with Apple Remote Access, log on to a file server, synchronize or backup some files, log off the file server, disconnect ARA, and put a PowerBook to sleep or shut down your Mac. All this can be scheduled to happen at night or at any preset time, once or peridically, without anyone present.