PNG ICO ICNS MORE
Desktop apps
Flat
Circular icon set
Picasa
WhiteSmoke
256x256
Mixed
Smooth
48px web iconset
Billing
48x48
day, Calender, event
Clipboard
B, Clipboard
Doc, single
Doc
documents
gmail
Pictures
modern, printer
Social media
Cartoon
Social Puzzle
Blinklist
128x128
blogmarks
Designbump
Dzone
propeller
Reddit
simpy
Signs & symbols
3D
Must Have
document, Text
Set of social icons
Digg
64x64
flickr