- Bijou 150 x 10 pixels icons : http://bijou.im/
- http://thenounproject.com/
- 50 amazing free icons sets : http://webdesignledger.com/freebies/50-amazing-free-icon-sets
- Smashing Mag : 35 (Really) Incredible Free Icon Sets : http://www.smashingmagazine.com/2008/03/06/35-really-incredible-free-icon-sets/
- 30 free icons packs from the Dribble community : http://line25.com/articles/30-free-icon-packs-from-the-dribbble-community
- 32 elegant and minimalist icon packs : http://psd.fanextra.com/articles/32-elegant-and-minimalist-icon-packs/
- POI icons : http://mapbox.com/maki/
