This FTP tool can be run in interactive mode with drag and drop support or you can run it in silent mode for unattended, script-driven file transfers.
This provides queuing support for transferring files and an auto-resume feature gives you the ability to reconnect and transfer a file from where you left off. You can even transfer files in the background so you can perform other tasks at the same time.
More info:
hxxp://www.filestream.com/concordftp/