PNG ICO ICNS SVG MORE
Mixed
Glyph
WPZOOM Developer Icon Set
Key
Black
512x512
Iconic
Key, stroke
DarkSlateGray
Key, fill
PNG MORE
Business & finance
24x24 Free Application Icons
24x24
Blue, Key
PNG ICO ICNS MORE
Gentle Edges Icon Set
Key, password
128x128
Pittogrammi
Key, secure
Devine Icons Part 2
UI
Windows 8 metro style
Free Mobile Icon Kit
Key, refresh
64x64
Windows 8 icons
26x26
IcoMoon
32x32
Mini icon set Part 1
48x48
Silver
Jigsoar
Retina Display Icons
Desktop apps
16x16 Free Toolbar Icons
password, Close, secrecy
16x16
Travel & hotels
DOT pictograms
locker, Key, Bagage
256x256
Wireframe mono icons
black key, password, Lock
Music & multimedia
fill, Key
Ecqlipse 2