SyncOnDemand

SyncOnDemand offers Real-time synchronization of files between local directories, different drives, or across a local network to other computers or over the internet to or from an FTP site.

In addition to realtime monitoring of files, SyncOnDemand gives includes a flexible scheduler that allows you to create profiles that synchronize your files on a set a schedule. For instance every hour, or every Friday at 11pm. This is a perfect solution if you have large files that you don't change often.