Fetch has a beautiful, simple, friendly user interface that hasn't changed much in the 15 years I've been using it. It's incredibly easy to navigate to different parts of a server, upload, download, rename, delete - all the things you need to use FTP for. It's also super fast and very reliable (no dropped connections). I have to admit that I love the little running dog! I've tried other FTP clients for Mac but I keep coming back to Fetch Review collected by and hosted on G2.com.