DHEX is a more than just another hex editor: It includes a diff mode, which can be used to easily and conveniently compare two binary files. Since it is based on ncurses and is themeable, it can run on any number of systems and scenarios.
Ghex Alternatives
Ghex is described as 'GHex - a hex editor for GNOME' and is a Hex Editor in the development category. There are more than 25 alternatives to Ghex for a variety of platforms, including Windows, Linux, Mac, BSD and PortableApps.com apps. The best Ghex alternative is HxD, which is free. Other great apps like Ghex are IDA, wxHexEditor, Malcat and Bless.