Here you go: http://www.pickbee.com/free-quality-icons-for-your-website-or-application/
A little note from the site,
Icon is one of important visual element for web design or application. Appealing icon can easily draw your user attention and telling message in more effective way, therefore by using them properly you can help your user quickly find information that they are looking for. A well designed icons and proper use of them surely will help increasing your website or application value which lead to increase in profits for your product and business.