PNG SVG PSD EPS MORE
Interface
Flat
Essential Collection
Info, Information, round
CornflowerBlue
512x512
PNG ICO ICNS MORE
Flat icons
video, File, help
256x256
Webcam, help
type, video, File
PNG MORE
Google Plus Interface Icons
help
128x128
Oxygen
question mark, reading, read
48x48
Kde, help, about
XPOrbs - Part 1
Orb, help
170 Dock
Developpers
button, Blue, help
32x32
Fugue
read, Book, reading
16x16
on Stage
Pleasant
help, And, question mark
Refresh CL
Toolbar Icons 3 BY Ruby Softwar
PNG ICO MORE
Basic
help, support, flag
64x64
Photography & graphic design
3D
32x32 Free Design Icons
support, question, help
Computer & hardware
Smooth
Crystal Project
stock, Book, help
Desktop apps
170 dock icons
Mixed
On-stage
Business & finance
UI
Pixel
help, Blue, button
Basic Set
48, help, flag