PNG ICO ICNS MORE
UI
Smooth
Taskbar Notifications
volume, low, Control
Black
512x512
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Mixed
Tango Icon Library
Audio, low, volume
Files & folders
FS Icons Ubuntu Light
zero, Panel, volume
volume, Audio, Panel
FS Icons Ubuntu Dark
volume, low, Audio
low, Audio, zero
Desktop apps
Farm-fresh
low, sound
32x32
Battery, low
Gainsboro
Contrast, low
DimGray
Arrows
Minimal perception
low, Audio, speaker
Gray
64x64
Computer & hardware
Futurosoft
128x128
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Network & communications
Oxygen
low, Audio, volume
22x22