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UI
Pixel
WooFunction Icon set
tools
DarkSlateGray
32x32
Desktop apps
Smooth
Mac OS X style
tools, Folder
WhiteSmoke
512x512
Shopping & e-commerce
Diagram version 2
Diagram, tools
Black
96x96
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GIS
SaddleBrown
24x24
vertex, tools
Music & multimedia
Photorealistic
Pro Red
Admin, tools
128x128
Business & finance
3D
Boxes
tools, Box
Travel & hotels
Google Maps Icons
32x37
Computer & hardware
A Space Odyssey
Key, tools
Sweetie BasePack
DarkGray
Discovery
Options, settings, tools
Photography & graphic design
Transformers
Administrative, tools
tools, configuration, settings
PNG ICO MORE
Ginux
tools, Administrative, preferences
LightSlateGray
64x64
Alcohol
chart, tools
Free Applications Icons
Configure, cogwheel, rotate
PaleTurquoise
Go, stop, play
conf, Options, Desktop
Wrench, configuration, Options
Phuzion
GhostWhite
Gnome icons
Hyphenation, tools
48x48
Bags and boxes
spanner, tools, Setting
Mixed
Basic Set
preferences, Gear, tools
Silver