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Computer & hardware
3D
iMod
screen, monitor, option
Black
512x512
preferences, Gear, Cog
Mobile apps
Breathe
settings
DarkSlateGray
48x48
Business & finance
Arzo
settings, preferences, Gear
DarkGray
Mixed
Micro
tools, preferences, settings
Silver
128x128
Network & communications
BeOS
settings, beos, Clock
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UI
Drifting
Display, connected, settings
64x64
network, settings
photo, settings
Rss, Channel, settings
security, settings
speaker, sound, settings
system, settings
PaleTurquoise
theme, settings
water, video, settings
Pleasant
settings, configuration
The Spherical icon set
preferences, configuration, repair
MidnightBlue
Options, configuration, settings
settings, configuration, Options
Programmers pack vol. 1
preferences, Gear, settings
YellowGreen
Pure web
718x718
Desktop apps
Illumine