PNG ICO ICNS MORE
UI
Pixel
Blueberry
plus
YellowGreen
32x32
Smooth
Essen
Avatars & smileys
Hamburg
PNG MORE
Pixel Pulp Teaser
Add, plus
24x24
Mixed
PC 100 Icon Pack
Signs & symbols
Kiwi
plus, Add, increase
Desktop apps
Farm-fresh
green, Add, plus
WooFunction Icon set
Add, plus, green
Business & finance
Pretty Office
256x256
plus, Add
Fugue Icons
Block, plus
16x16
Basic Set
Add, substract, plus
64x64
Add, Accept, plus
Shopping & e-commerce
Woothemes Ultimate Icon Set
128x128
3D
Dellipack
plus, more, cross
DRF
green, plus, Add