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Network & communications
Pixel
16x16 Free Application Icons
reductor, work, generator
Black
16x16
Mixed
Flat
20 Flat Icons
tools, preferences, settings
Gainsboro
128x128
Desktop apps
Appicns
appicns, preferences, system
DarkSlateGray
513x513
Business & finance
Glyph
Gentle Edges Icon Set
settings, preferences, Wrench
Smooth
iOS 7-inspired Mac icon set
preferences, settings
1024x1024
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Pittogrammi
preferences, Gear
512x512
Social media
The Circle Icons
preferences, system
Flat UI Icons Free
Signs & symbols
3D
Free 3d Glossy Interface Icon Set
settings, Gear, Desktop
64x64
Application, preferences, settings
Gear, settings, preferences
DodgerBlue
preferences, tool, Applications
PNG MORE
Minicons Free
settings, preferences
45x45
Files & folders
Alumin
Folder, preferences, Developer
Milkanodised
system, preferences
WhiteSmoke
Photorealistic
Free Mac Icons
NetNewsWire 2
Browsing, preferences
32x32
preferences
preferences, Downloading
OliveDrab
preferences, weblogeditor
Computer & hardware
Exempli Gratia
256x256
FS Icons Ubuntu
Farm-fresh
