Fugu is a commandline Secure File Transfer (SFTP) application with an intuitive drag and drop Graphic User Interface for OSX. I've been using Fugu since the Burnlab server transfer a couple weeks ago, and have to say it's one of best designed applications I've ever had the pleasure of using. (It has been around for a couple years, but I'm a little slow on this stuff... Burnlab was run from a dial-up connection until 2003.)