PNG ICO MORE
Gnome 2.18 Icon Theme
stock, Form, show
Black
24x24
PNG ICO ICNS MORE
Tango
Dialog, wrong, Alert
32x32
Information, about, Info
Alert, Dialog, Error
Tomato
Fugue
Application, Dialog
WhiteSmoke
16x16
PNG MORE
Human-O2
Apply, Dialog
22x22
wrong, Error, Dialog
128x128
Dialog, question, help
Dialog, exclamation, wrong
Red
hint, Info, Dialog
Android
speak, Dialog, talk
Gray
48x48
GNOME Desktop
Gnome, Dialog, help
64x64
warning, Error, Alert
DarkOrange
Dialog, Info, Gnome
Error, Gnome, Dialog
Firebrick
password, Dialog, Gnome
Dialog, Apply
Buuf
gtk, Dialog, And
DarkSlateGray
PNG ICO ICNS SVG MORE
Desktop apps
Outline
Minicons
Alert, Prompt, Attention
512x512
Confirmation, Box, Alert
Attention, Box, Confirmation
warning, Alert, Dialog
Dialog, Prompt, Box
Education & science
Handdrawn
Brainy Icons Free — 36 Science and Education Icons
Talking, Comments, hand-drawn