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!
Google Fonts - Making the web more beautiful, fast, and open through great typography
1000 Detailed Creative Icons - Carefully designed icons with tons of fine details
FontJoy - Get smart font pairings in one click
Icons Mind - The Biggest iOS 8, iOS 7 & Android Icons Pack
Typewolf - Typewolf helps designers choose the perfect font combination for their next design project—features web fonts in the wild, font recommendations and learning resources.