Today, we dig in the depths of the web to bring you 20 great free high-quality icons sets. You can use these sets in your personal and/or professional projects (as long as the licensing terms allow it, so don't forget to read first).

» Sketchy Paper Icons

» Pool & Persons

» Indiana Jones

» Light Icons

» Simplistica

» iVista

» PI Diagona mini-icons

» Fast Icon Users

» CSS Creme Stickypack

» Monofactor vector set

» Web Applications

» The Simpsons mail stamps

» eico 1 year

» Dino icons

» Old School

» PC Keyboard

» Zeus' feed icons

» mAqua ChronoSync

» Adobe CS3

» Iconshock