PNG ICO ICNS MORE
Desktop apps
Smooth
Icons Mega Pack 1 and 2
math, Openoffice
LightSteelBlue
256x256
Farm-fresh
pi, math
Black
32x32
Glyph
16x16 Free Toolbar Icons
Calc, calculator, Ooo
DarkCyan
16x16
PNG MORE
3D
Free Applications Icons
calculations, taxes, arithmetic
SkyBlue
24x24
Sleek XP: Software
office, open, math
DarkSlateGray
128x128
Pixel
Diagona Icons
graph, math
CornflowerBlue
KDE Crystal Diamond
math, Epsilon
math
WhiteSmoke
22x22