I always used Transmit but I have an issue with an SFTP and I need to test the connection with a different client that supports .ppk and has a good transcript of what is happening
I still have Transmit, but it lives in its own universe. FTP Client Pro does too. Is there one that creates a download folder in Files so other programs can access the downloaded files? Like in my current case I can get a configuration file for a piece of equipment, but then I need to send it...