Before downloading Swiftfox you need to decide which type of download is right for you. If you are relatively new to Linux and aren't sure how to install programs then you will want to select the installer. If you have a debian based distro and want the ease of updating that comes with using an apt repository I would suggest using deb files. However if you are wanting total control of where Swiftfox gets installed and are comfortable working with tarballs, then the tarballs are for you. An older version of Swiftfox is available here.