PNG MORE
Business & finance
Pixel
24x24 Free Pixel Icons
Entry, no entry, Negative
Crimson
24x24
PNG ICO ICNS MORE
Network & communications
16x16 Free Application Icons
no, Exit, delete
Red
16x16
Minus, sign, forbid
Family & home
IconBeast Lite
Entry, no
Black
30x30
UI
Gnome icons
Entry, Navigator, Edit
Entry, Navigator, update