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Desktop apps
Smooth
Social icons by Deab
twitter
DarkCyan
32x32
Farm-fresh
Comment, retwit, twitter
Black
Comment, Box, twitter
MediumTurquoise
twitter, Comment
Comments, twitter
48px icons 1
DeepSkyBlue
48x48
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Athena HD
SaddleBrown
126x128
DarkGray
Quetto
DodgerBlue
256x256
48px icons
SkyBlue
Astra
LightSkyBlue
59x60
Peru
twitter, twitterrific
OliveDrab
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Social and web icons
DarkTurquoise
64x64
Polaroid
LightBlue
62x78
Web 2.0 Origami
Animal, Blue, bird
100x100
250x250
bird, Blue, twitter
40x40
Chrome
70x70
39x40