Cyberduck 9.1
The Cyberduck team has issued version 9.1 of its open-source file transfer app, adding a display of transfer progress in the Finder for downloads and uploads. The release also shows indeterminate progress when waiting for large file upload to complete on Backblaze, Box, and AWS S3; addresses failures for multipart uploads to buckets in S3 when the filename included a period; fixes a bug that prevented files from being removed from a vault when deleting a folder in multiple services; and resolves a failure to upload nested folders to a vault in multiple services. Cyberduck is free, though you can support it via a donation or a $23.99 purchase from the Mac App Store. (Free, 158.9 MB, release notes, macOS 10.13+)
Cyberduck has been my FTP app of choice ever since the previous app I used went out of business after the developer passed away.
At first I was skeptical of the drag-and-drop from Finder to target site rather than dragging between panels, but it has turned out to be incredibly easy to use and stable.
I recommend it.
Strangely enough this may be the seemingly random post that gets me onboard. Love everything about their approach and finally tried it out.