QSync is a Qt-based frontend to the rsync file transfer utility, with an emphasis on initial ease-of-use, but also with the ability to be just as powerful as rsync itself.
The minimum required info for successful operation is the Hostname (of the rsync server you want to connect to). If the rsync module you want to connect to is publically listed on the server, QSync will notice this and allow you to choose among all listed modules.