PNG ICO ICNS MORE
Photography & graphic design
3D
32x32 Free Design Icons
no entry, no, cancel
Black
32x32
Signs & symbols
Free 3d Glossy Interface Icon Set
glossy, forbid, sign
Gainsboro
64x64
delete, Exit, Entry
erase, err, reject
cancel, wrong, Error
OrangeRed
stop, remove, Error
delete, no exit, Close
UI
Pulse Pack
no, 51lll, ok
512x512
Process, no
no
ok, no
Family & home
Birthday icons
cake, cherries, no
SaddleBrown
Computer & hardware
Pandora
no, Cover
DarkSlateGray
128x128
Network & communications
BeOS
halo, no, beos
Mixed
The Spherical icon set
smoking, no, no smoking
Maroon
Must Have
Close, no, reject
Firebrick
256x256
Discovery
Connect, no
Gray
PNG MORE
Desktop apps
Free Applications Icons
remove, delete, reject
Crimson
24x24
reject, no, wrong
delete, no, Cancelled
no entry, restricted, forbidden
Red
Minus, forbid, restrict
no entry, unable, Exit