PNG ICO ICNS MORE
Social media
Flat
Buttonz
Stumbleupon, Buttonz
SeaGreen
256x256
Desktop apps
Circular icon set
Stumbleupon
Black
UI
Metro UI Icon Set
SteelBlue
512x512
LimeGreen
Chocolate
PNG MORE
Round Simple Social Icons
58x58
Metro UI Dock
Minimalist Social Media Icons
OrangeRed
New Social Media icons
Stumbleupon, Mirror
MediumSeaGreen
640x640
Mirror, Stumbleupon
DarkCyan
Somacro social media icons
500x500
Flat Social Icons
48x48
SocioLEGO
DarkSlateGray