Google Fonts - Making the web more beautiful, fast, and open through great typography
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!
Dank Mono - The rather special coding font
Font Generator - Tons of font ideas in one click
FontFace ninja - A browser extension to identify and try fonts on any website
Caprine - Elegant Facebook Messenger desktop app