PNG ICO ICNS MORE
Desktop apps
Smooth
Windows 7 toolbar full
Lock
Black
256x256
Sabre
Folder, Lock
512x512
Farm-fresh
secure, Lock
DarkGoldenrod
32x32
Lock, Add
delete, Lock
Lock, Break
Edit, Lock
Lock, Go
mail, Lock, open
Goldenrod
Mac OS X style
Lock, secure, private
Key, password, Lock
OliveDrab
48x48
One bit
Unlock, Lock
DarkGray
Lock, Blue, secure
KDE Crystal Diamond
File, locked, secure
Snow
128x128
22x22