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Desktop apps
3D
Free Social Media Icons
Message, Chat, announcement
LimeGreen
512x512
Flat
Circular icon set
Technorati
Black
256x256
Smooth
Farm-fresh
ForestGreen
32x32
Cartoon
Puck icons pack II
300x300
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Isometrica Social Icons
LawnGreen
105x105
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Social and web icons
64x64
3D Cartoons III
128x128
Chrome
70x70
39x40