Truck - A faster alternative to FTP
WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
arRsync - arRsync is a tool that is designed for macOS that is used for transferring and synchronizing files between a computer and a storage drive.
Forklift - The most advanced dual pane file manager and file transfer client for macOS.
Synchromat - Synchromat is file and folder synchronization software for Windows.
Cyberduck - A libre FTP, SFTP, WebDAV, S3, Backblaze B2, Azure & OpenStack Swift browser.