PNG ICO ICNS MORE
Shopping & e-commerce
Pixel
Credit card icons
Credit card, payment, Amex
DarkCyan
32x32
UI
Smooth
Ultimate Gnome
select, All, Edit
256x256
Music & multimedia
Soft Icons
Arrow
128x128
Desktop apps
3D
Minicons
Up, Arrow
48x48
Sleek XP: Software
Design, photoshop, cs3
Photography & graphic design
Dark Glass
next, Blue, Arrow