Looking for an icon font for either web or desktop work? Check out the aptly named Font Awesome.
Designed to work with Bootstrap, Font Awesome is free to use for commercial work and version 4.0.3 offers 369 scalable vector icons that can be customized with CSS, or used just like any other OpenType font. The download package includes the icons in web font formats plus SVG and OTF versions. Examples show how to use CSS to add borders, stack the icons, make them spin, etc. There’s also a cheatsheet showing the Unicode values for each icon.