PNG ICO ICNS MORE
Signs & symbols
Smooth
Two Tone Design Set
settings, tool, wheel
DarkGray
128x128
Mixed
Toolbar icon set
preferences, Gear
32x32
3D
Isloo
preferences, Gear, Cog
UI
Gnome Web Icons
Desktop, preferences, Personal
Desktop, 48, Gnome
48x48
Pixel
32px Mantra
preferences, off
Corner Stone
off, preferences
on, preferences
Business & finance
Arzo
settings, preferences, Gear
Computer & hardware
Human o2
preferences, settings, Advanced
Desktop apps
Diagona Icons
preferences, tool
16x16
Tango
preferences, Desktop
Photography & graphic design
Dark Glass
windows, Gear, tools
Network & communications
Oxygen
Database, preferences, setup