PNG MORE
Social media
Pixel
Simply 8-bits #4
flickr
GhostWhite
96x96
PNG ICO ICNS MORE
Desktop apps
Seize
Black
16x16
Mighty Social Icons
WhiteSmoke
32x32
WPZOOM Social Networking Icon Set
LightGray
38x38
UI
Fugue Icons
images, flickr
DarkSlateGray
Mobile apps
iPhone Sidebar icons
Gainsboro
Macchiato
Ar, flickr
20x20
32 Pixel Social Media Icons
DodgerBlue
Classy Social Media Icons
Social Networking
Social Media Mini
Dead simple
PaleTurquoise
15x15