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UI
3D
Gnome Web Icons
48, Gnome, system
OliveDrab
48x48
Outline
UIDesign Icons
Log
Gray
16x16
Computer & hardware
Human o2
viewer, Log, Utilities
DarkSlateGray
128x128
WhiteSmoke
Desktop apps
Smooth
3D Cartoons III
Log, off, windows
Orange
Pixel
Gnome icons
out, log out, Log
Black
Tango
system, out, logout
DarkGray
32x32
Crystal Project
256x256
Photography & graphic design
Dark Glass
File, graph, Log
Futurosoft
graph, scale, rating
Glaze
Log, report
LightGray
Network & communications
Oxygen
dictionary, diary, Book
Nuvola