Genericons : Genericons are vector icons embedded in a webfont designed to be clean and simple keeping with a generic aesthetic.
Use genericons for instant HiDPI, ...
IcoMoon : IcoMoon is an icon solution, providing three main services: Vector Icon Packs, The IcoMoon App, and an Icon Delivery Network.
Bootstrap : Build responsive, mobile-first projects on the web with the world's most popular front-end component library.
Bootstrap is an open source toolkit for ...
Kickstrap : Twitter's Bootstrap with themes, apps, and other enhancements
Font Awesome, the iconic font designed for use with Twitter Bootstrap. In a single collection, Font Awesome is a pictographic language of web-related actions.