PNG MORE
UI
Pixel
Windows 8 Pack (Metro Style)
group, people humans
DarkSlateGray
26x26
Tiny IM Icons
Users, group, forum
24x24
PNG ICO ICNS MORE
WooFunction Icon set
Business, Users, friends
32x32
Desktop apps
Splashyfish
Blue, group
16x16
Blue, Add, group
Blue, group, new
Edit, group, Blue
group, green
remove, Blue, group
group, Edit, green
green, group, remove
new, green, group
grey, group
group, Edit, grey
Add, group, grey
group, grey, remove
new, grey, group
Mixed
Led Icons
shape, group