PNG ICO ICNS MORE
Desktop apps
Smooth
Icons Mega Pack 1 and 2
talk, google
Black
256x256
Farm-fresh
DarkSlateBlue
32x32
Shiny Icon Set
talk, Chat
DarkKhaki
64x64
Chat, talk
SkyBlue
Flurry for the web
google, talk
Goldenrod
512x512
New Google Product Icons
talk
Linen
128x128
Once
talk, references, forum
GreenYellow
48x48
PNG MORE
Ciceronian
Comment, sms, Text
DarkSeaGreen
59x60
3D Cartoons III
One bit
Comment, Chat, Text
Teal