To access a server or a remote computer via FTP, special programs called FTP clients are used. File Transfer Protocol can work in two modes — active and passive. In case of active mode, a client sends its IP address and a server creates a connection with it. In case of passive mode, a client receives from a server the number of a dynamic port and establishes a connection with the client via this port. Passive mode is generally used by clients behind the firewall. However, with the great variety of FTP Mac solutions on the market, it is very easy to lose your head. So what is the best FTP client for Mac?