What are some alternatives?
When comparing WinSCP and Cyberduck, you can also consider the following products
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.
Forklift - The most advanced dual pane file manager and file transfer client for macOS.
SmartFTP - . Backblaze B2, Google Drive, OneDrive, SSH, Terminal client. It allows you to transfer files between your local computer and a server on the Internet.
Transmit - Transmit is an FTP client for Mac OS X and Mac OS Classic (which is unsupported).
FireFTP - FireFTP is a free, secure, cross-platform FTP/SFTP client for Waterfox which provides easy and intuitive access to FTP/SFTP servers. You need to download Firefox to install this add-on.
WebDrive - WebDrive File Access Client allows you to open and edit server-based files without the additional step of downloading the file.