Yummy FTP

Yummy FTP Pro is an FTP client for macOS made by Yummy Software. It supports FTP/S, SFTP and WebDAV/S. It is noted for its speed and reliability, and automation capability using AppleScript.
Its programmer died in August 2018 and there seems to be no-one continuing his work. As the program is 32 bit, it will fail to work starting with macOS 10.15 Catalina.