Truck - A faster alternative to FTP
FileZilla - FileZilla is an FTP, or file transfer protocol, client. It lets individuals transfer single files or batches to a web server. For many years, FTP was the standard for website design. Read more about FileZilla.
WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
HTTPie - CLI HTTP that will make you smile. JSON support, syntax highlighting, wget-like downloads, extensions, and more.
Yummy FTP Pro - Pro-level, fast, reliable FTP/S + SFTP + WebDAV/S client.
lftp - lftp is a command-line file transfer program which besides FTP, also supports FTPS, HTTP, HTTPS...