Font Awesome - Font Awesome makes it easy to add vector icons and social logos to your website. And version 5 is redesigned and built from the ground up!
What Font Is - Find any font from any image (commercial or free)
Google Fonts - Making the web more beautiful, fast, and open through great typography
Owlead - Grow your Twitter with valuable followers, effortless
Fonts Ninja - Try fonts discovered on websites in any design software
Typo - 10X your developer productivity!