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Signs & symbols
Smooth
Social Flat Dual Vertical
slashdot
Teal
512x512
Slideshare
CadetBlue
Smugmug
OliveDrab
Snapchat
Gold
Soundcloud
OrangeRed
Spotify
Squarespace
DarkSlateGray
Squidoo
DarkOrange
steam
Surfingbird
SteelBlue
Stumbleupon
swarm
Goldenrod
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Mixed
Gradient Runded Glowing Icons
star
MediumAquamarine
128x128
Setting
Social Flat Buttons
Scribd
Squarespace, square, space
Technorati, social media
YellowGreen
social-network, Yelp, social media
Firebrick
Social media
Social media with original colors
talk, Skype, square
DeepSkyBlue
256x256
Computer & hardware
System Flat Buttons
Sabayon
MidnightBlue
Sidux
DarkRed
Slax
Slackware
Solaris
Chocolate