ForkLift is a robust and elegant file manager and FTP/SFTP client...
Viper FTP (was ViaFTP) is a handy and powerful file manager for OS X, with a tremendous user interface that makes it effortless to use.
Powerful FTP/S + SFTP + WebDAV/S file transfer app.
Transfer files using various connection protocols.
Upload and download data via FTP and FTPS protocols.