PNG MORE
Desktop apps
3D
Free Applications Icons
Alert, exclamation, General
Tomato
24x24
Alert, hanger, warning
Black
warning, ban, Block
danger, Message, Attention
Goldenrod
PNG ICO ICNS MORE
Business & finance
Phuzion
warning, Alert
128x128
Computer & hardware
Human o2
Dialog, warning
Alert, warning
Orange
48x48
Mixed
Iconza
warning
SeaGreen
32x32
warning, gtk, Print
WhiteSmoke
Photography & graphic design
Dark Glass
Call, Alert, Chat
Attention, user, warning
MidnightBlue
Alert, warning, Disk
DarkSlateGray
UI
Glaze
warning, messagebox, Alert
64x64
Web Application Icons Set
Gold
Nuvola
warning, important, Attention
Alert, Attention, exclamation
DarkRed
Nuove
warning, cancel, stop
Firebrick
realistiK Reloaded
messagebox, warning
Crystal Clear
Info, warning
Chocolate