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Desktop apps
Smooth
System Shade Circles
Slackware
DarkSlateBlue
512x512
Social media
Social Network - Hexagonal
social network, Tumblr
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Files & folders
Spirit20
social media
20x20
Avatars & smileys
Picnic
icon | Icon search engine
70x70
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Circular Social Media
Social, ymessenger
128x128
Computer & hardware
Crystal Project
Systemsettings
256x256
KDE Crystal Diamond
22x22
24x24
16x16