PNG ICO MORE
UI
3D
Gnome Web Icons
yes, ok, tick
Black
64x64
64, Gnome, Dialog
Firebrick
bulb, Idea, light
password, Gnome, 64
Dialog, Faq, help
Attention, warning, Dialog
DarkOrange
PNG ICO ICNS MORE
Pixel
Fugue Icons
Application, Dialog
WhiteSmoke
16x16
Mixed
Smooth
Humility
stop, gtk, Dialog
DarkRed
48x48
Micro
Dialog, Information
SteelBlue
128x128
Snowish
Dialog, Error
IndianRed
Dialog, warning
Business & finance
Glyph
Wireframe mono icons
live chat, speech, talk
Handdrawn
Web Design Creatives
Dialog
Computer & hardware
Android icons
Comment, Chat, Dialog
Gray
Ultimate Gnome
ok, Dialog
256x256
Exit, Close, Dialog
22x22
Lynx Black
Discovery
Error, Dialog
Tomato
32x32
Arrows
Minimal perception
Dialog, question
DarkGray
Social media
Twitter Icons
Dialog, twitter, window