FontBase is a lightning fast, beautiful and free font manager for designers. FontBase gives you all the stability, speed and reliability of a paid font manager, but free and on all platforms!
Free. Syncs to Google fonts smoothly. Nice interface. Recognizes OTF, TTF, and web fonts. Very easy to install.
Doesn't recognize PostScript and old True Type formats.
I recommended this today to a client. We both experimented with it and liked it a lot.Anne S. Katzeff has used this product for one day.