PNG ICO ICNS MORE
Desktop apps
3D
Google Plus
Google+, +1, google plus
MidnightBlue
256x256
Social media
Google +1 icons
google plus, plus, button
flag, +1, Google+
One, plus, +1
Mixed
Shine 7
earth, Browser, world
400x400
Business & finance
Seven General Icons
Business man, Administrator, Man