MonoLisa - font follows function
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.
Mononoki Typeface - Font for programming and code review
Octicons - Your project. GitHub's icons.
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.
Socialicious - A social media icons library in font form.