PNG ICO ICNS MORE
UI
Pixel
Blueberry
group, friends
YellowGreen
32x32
PNG MORE
Windows 8 Pack (Metro Style)
group, people humans
DarkSlateGray
26x26
Tiny IM Icons
Users, group, forum
24x24
WooFunction Icon set
Business, Users, friends
GIS
group
PaleTurquoise
group, Add, Layer
Gainsboro
Fugue Icons
group, Layers
SteelBlue
16x16
ui, Box, group
Gray
Gnome icons
frame, group, Form
Snow
forum, friends, people
Black
48x48
group, Enter
group, Exit
expand, Column, Cells
Linspire Clear
DarkGray
22x22
Silk
friends, group, Users
Sienna
group, Add
DarkSeaGreen
Users, group, delete
Error, group
Peru
Edit, group, Users
group, Gear
Silver
Key, Users, group
group, Go, Users
group, Link