PNG ICO ICNS MORE
Social media
Smooth
The Circle Icons
dropbox
SkyBlue
512x513
DarkSlateGray
512x512
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Flat
Funky - free
MediumTurquoise
Glyph
Picons Social
Black
Cloud, dropbox, files
Free Social Icons
SteelBlue
square, dropbox
six, dropbox
Gainsboro
gray, square, dropbox
Circle, dropbox, gray
Circle, dropbox
Color, dropbox, Circle
Metro UI Dock
Folder, dropbox
DodgerBlue