Font Manager is intended to provide a way for average users to easily manage desktop fonts, without having to resort to command line tools or editing configuration files by hand.
While designed primarily with the Gnome Desktop Environment in mind, it should work well with other Gtk+ desktop environments.
Font Manager is NOT a professional-grade font management solution.
Font Viewer allows previewing font files prior to installation. It features several ways to preview font files along with a character map and displays font properties and license details.