Windows Sync Live 

Keep important files at your fingertips, whether you are at work or home. All file changes are automatically synchronized between linked computers so you are always accessing the latest information. FolderShare frees you from the hassles of emailing documents, loading files onto removable storage devices, or burning CD/DVDs to stay in sync. Share photos and files with friends, collaborate with colleagues, or keep your computers in sync through FolderShare's private, secure network. Then every time you update the shared files, FolderShare will update your friends' or colleagues' hard drives instantly.