ttype is a typography tool designed to simplify the process of finding the perfect font for your project.
Even though there are numerous websites that feature tag-based font searching, ttype was created so that you don't need to know what you want. Hover (or touch) a font and you can instantly see more details about it, or you can move on to find more fonts like that. If the tag means something to you, go ahead and choose the path you want. If it doesn't, just pick the font that seems most right to your needs and keep digging until you find the perfect one.