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Gaming & gambling
3D
Free Game Icons
warning, Blaze, Attention
Black
64x64
Signs & symbols
Free 3d Glossy Interface Icon Set
Attention, Error, cautious
Hand, warning, Abort
warning, danger, Alert
Prompt, danger, exclamation
Prompt, help, danger
Business & finance
E-commerce & business icons
Alert
256x256
Shimmer Icons
warning, Alert
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UI
Gnome Web Icons
64, Gnome, Alert
Plastic XP
Alert, emergency
400x400
Mixed
Stroke
Alert, virus
Vista Style Base Software
Attention, Alert, Achtung
Network & communications
BeOS
beos, warning, Alert
128x128
Computer & hardware
Discovery
32x32
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Desktop apps
Free Applications Icons
Alert, hanger, warning
24x24
warning, ban, Block
Phuzion
Iconza
Glaze
warning, messagebox, Alert
Crystal Clear
Message, critial, Alert
48x48
