Forklift

Forklift is one of the most advanced dual pane file manager and file transfer client for macOS. Forklift connect to SFTP, FTP, WebDAV, Amazon S3, Backblaze B2, Google Drive, Rackspace CloudFiles, SMB, AFP, and NFS remote volumes and easily manage your files quickly across networks. You can connect to multiple servers at a time and even copy between them with drag and drop. Forklift is also avalible though your menu bar and lets you mount a saved remote connection as disk, upload files to a remote server from Finder by drag and drop, or run a saved Synclet even if ForkLift is not running.