Material Design Iconic Font - Material Design Iconic Font is a full suite of official material design icons and community icons for easy scalable vector graphics on websites or desktop.
Google Fonts - Making the web more beautiful, fast, and open through great typography
Android Icons - Androidicons is a professional, handcrafted icon set with 250 icons in 14 different colors and 5 sizes, including an icon font and all sources.
What Font Is - Find any font from any image (commercial or free)
Octicons - Your project. GitHub's icons.
Fonts Ninja - Try fonts discovered on websites in any design software