A side-by-side comparison between popular icon fonts:
- FontAwesome: http://fontawesome.io/
- Glyphicons: http://getbootstrap.com/components/#glyphicons
- Foundation Icons: http://zurb.com/playground/foundation-icon-fonts-3
- Material Design Icons: https://materialdesignicons.com/
- Ionicons: https://materialdesignicons.com/
- Elusive-Icons: http://elusiveicons.com/