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Social media
Handdrawn
Jolly Icons Free – 36 Hand-Drawn UI Icons
friends, Connection, fb
Black
64x64
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3D
3D Glossy Blue - free
tweets, Connection, blog
SteelBlue
512x512
Smooth
Social circle
Communication, Connection, professional
SkyBlue
web, tweet, Social
blog, Wordpress, internet
MediumTurquoise
Communication, Facebook, internet
LightSlateGray
Glyph
Metro Contact - free
face book, media, Social
Short, online, twit
Flat
WinDev Contacts - free
social network, Connection, Connections
Education & science
Brainy Icons Free — 36 Science and Education Icons
Talking, Comments, hand-drawn
science, Atom, nuclear
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Halloween
Photorealistic
Desktop Halloween
Connection, insects, spider's web
256x256
Avatars & smileys
Jolly Icons — Part 1: Social Media and Communication
Connection, Linkedin, Social
Bubble, Messenger, Message
Gaming & gambling
Free Game Icons
hyperlink, Connection, url
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Mobile apps
Free Retina Icon Set
Social, Connections, media
60x60
Desktop apps
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network, offer, Piracy
MediumSeaGreen
Social, Facebook, face book
RoyalBlue
internet, stample, url
network, Connection, internet
CornflowerBlue
Business & finance
Pixel
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network, globe, earth
24x24
web, global, Orb
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globe, web, Communication
Lavender
international, globe, Communication
DodgerBlue