That's the reason of Fonster. A lite program that allows you to view all your fonts at a glance.
It is a sidebar where you'll see all fonts. You'll only have to click one of them to view a full sentence written using that font.
If you are planning to write omething and you want to do it in a new style, try a new font. You have lots of them, you only need a good font viewer to find it. Use Fonster and save a valuable time.