Daqu

Daqu is a program that you use to transfer files from one computer to another. A direct conection is set up with your remote computer (using its IP address) and then the bits are sent to the computer you want.

There aren't a ton of preferences, only the directory from where the files are going to be saved and received as well as a sound notification using the internal speakers. Of course, you don't need any instalation and it's also a pretty small file in and of itself.

When the transmission is interrupted, whether it be by you or a break in the internet connection, the program picks up where it left off.