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.
Octicons - Your project. GitHub's icons.
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.
Stackicons - Stackicons are icon fonts for web designers with added flexibility, including multiple button shapes and a unique multi-color option. Free and open source, Stackicons-Social includes finely-crafted icons for over 60 social brands.
Font Diao - Web Icons
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!