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Desktop apps
Glyph
Peelicons vol 1
social media, twitter
Black
512x512
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Simple Icons
twitter
4096x4096
Ourea Icons
256x256
Flat
Circular icon set
Pixel
Seize
16x16
Smooth
Farm-fresh
Comment, retwit, twitter
32x32
Comments, twitter
Handdrawn
Web Cartoon
48x48
Cartoon
Artcore
Webset Icons
twitter, Animal, tweet
PNG MORE
Web 2.0 Origami
Animal, Blue, bird
100x100
250x250
bird, Blue, twitter
40x40
Chrome
39x40