PNG ICO ICNS MORE
UI
Glyph
Round UI Buttons
Circular, Accept, Go
Tomato
512x512
ok, tick, yes
OliveDrab
tick, yes, Go
DeepSkyBlue
PNG ICO ICNS SVG MORE
Outline
Linecon
tick, success, yes
Black
Freeline
ok, yes, tick
ikooni outline: Free Basic
checkmark, Check, complete
Watchify v1.0 - 70px
Affirmative, yes, check mark
Watchify v1.0 - 80px
yes, check mark, success
Very Basic. Android L (Lollipop)
Checked, Accept, yes
done, check mark, good
ok, Accept, Choose
Pixel
Blueberry
vote, yes
DarkSalmon
32x32
Smooth
Essen
correct, gfdgdfgd, yes
YellowGreen
PNG ICO MORE
3D
Gnome Web Icons
yes, ok, tick
64x64
UIDesign Icons
no, gui, Checkbox
Gray
16x16
yes, radiobutton
Ultimate Gnome
ok, yes, Check
256x256
Lynx Black
yes, gtk
24x24
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BWPX
success, ok, yes
18x18
Glaze
green, ok, Check
Check, correct, yes
ForestGreen
48x48
Nuvola
yes, green, Accept
yes, Check, good
Crystal Clear
on, select, correct
128x128