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Social media
Handdrawn
Jolly Icons Free – 36 Hand-Drawn UI Icons
hand drawn, Connection, sharing
Black
64x64
Education & science
Brainy Icons Free — 36 Science and Education Icons
Computer, Notebook, network
science, Atom, nuclear
Molecule, science, Social
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Halloween
Photorealistic
Desktop Halloween
crisp, pet, insects
256x256
Connection, insects, spider's web
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Avatars & smileys
Jolly Icons — Part 1: Social Media and Communication
Connection, Linkedin, Social
512x512
Social, bird, network
Files & folders
3D
Soda Red
utility, red, soda
Mixed
Smooth
Tango Icon Library
system, Proxy, preferences
wired, network
workgroup, network
network, Server
Idle, network
receive, network
Business & finance
Glyph
48x48 Free Time Icons
stopwatch, watch, hour
48x48
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Pixel
24x24 Free Pixel Icons
web, global, Orb
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24x24 Free Application Icons
Connection, network
Network & communications
16x16 Free Application Icons
16x16
Black 48x48 Icons - free
tweets, Like, smo
image, pinterest, online
Professional Toolbar Icons - free
tweet, Connect, Social
Devine Icons Part 2
network
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Desktop apps
Ourea Icons
