PNG SVG PSD EPS MORE
Interface
Flat
Airports Icons
Info, button, help
DarkGray
512x512
PNG ICO MORE
Minimal perception
Dialog, help, question
64x64
PNG ICO ICNS MORE
Splashy
help, Comment, question
16x16
Arrows
Smooth
Dialog, question
Desktop apps
Pixel
Splashyfish
Information, Comment, question