PNG ICO ICNS MORE
Photography & graphic design
3D
32x32 Free Design Icons
mark, checking, spell
Black
32x32
Signs & symbols
Free 3d Glossy Interface Icon Set
yes, mark, validation
64x64
Accept, ready, tick
Business & finance
Smooth
Pretty office icons part 5
Semi, success
256x256
Free pretty office Icons part 2
tick, success
PNG MORE
Desktop apps
Free Applications Icons
ok, success, Accept
24x24
red, tick, yes
Check, Accept, green
UI
Crystal Clear
agt, success, Action
48x48