PNG ICO ICNS MORE
UI
Pixel
WooFunction Icon set
Database, warning
Gainsboro
32x32
Folder, warning
Wheat
warning, Page, Blank
WhiteSmoke
Page, table, warning
Text, warning, Page
warning, search
DarkGray
user, Man, consultant
DarkSlateGray
user, warning
PNG MORE
Tiny icons
warning
Orange
10x10
Fugue Icons
Eye, view alert, exclamation
DarkGoldenrod
16x16
compile, warning
Black
Mixed
Mini icons 2
Lavender
Gnome icons
warning, gtk, Dialog
SandyBrown
C9d
warning, Info
LightSkyBlue
24x24
Desktop apps
Splashyfish
osx, warning, Application
windows, Application, warning
warning, Box, weight
Khaki
warning, A4, document
Snow
warning, document, Letter
warning, documents
Silver
Error, Attention, exclamation
Red
triangle, Attention, warning
notice, Alert, triangle