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.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Forklift - The most advanced dual pane file manager and file transfer client for macOS.
iTerm2 - A terminal emulator for macOS that does amazing things.