Tariffication includes data storage rate (Gb per month) and traffic rate (Gb). Traffic rate includes only the volume of outbound traffic, whereas inbound traffic is free of charge.
FileZilla is a free graphical FTP, SFTP and FTPS-utility for Windows, MacOS and Linux. This program allows one to synchronize directories, manage files on a remote server, search for and download files. You can download the required version via the link to the official website of the program.