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Computer & hardware
Smooth
Crystal Project
tux, ux, Penguin
Black
256x256
Photography & graphic design
3D
Dark Glass
Man, tux, Running
128x128
Futurosoft
tux, Penguin
Network & communications
Oxygen
Animal, Penguin, tux
Penguin, tux
UI
Crystal Clear
Chat, tux, Penguin
Penguin, tux, Animal
16x16