Version 2 had a supremely useful and detailed information window for any selected font. In version 3, it is more streamlined for widescreen displays.

FontExplorer X Pro now has keyboard shortcuts for enabling and disabling the most commonly accessed features in the Preview window: kerning, tracking, and ligatures.

When exporting fonts, you can now keep their folder structure instead of exporting a single folder containing all your selected fonts. The exported folder can even include duplicate fonts, which is useful for exporting multiple sets. This feature can also can be used to archive your entire font library.