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.
PTFTP - Simplistic and intuitive explorer-like ftp client. Open source.
Cyberduck - A libre FTP, SFTP, WebDAV, S3, Backblaze B2, Azure & OpenStack Swift browser.
LAN-Share - LAN Share is a cross platform local area network file transfer application, built using Qt GUI...
WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
Forklift - The most advanced dual pane file manager and file transfer client for macOS.