Mac App Store is the simplest way to find and download apps for your Mac.To download Transmit from the Mac App Store, you need a Mac with Mac OS X 10.6.6 or later. Learn More. Description Transmit 4 is the ultimate FTP + SFTP + WebDAV + Amazon S3 file transfer client on the Mac. You need to transfer files. Maybe to an FTP or SFTP server, or the cloud via Amazon S3, or using WebDAV. You maintain a