PNG ICO ICNS MORE
Network & communications
Pixel
16x16 Free Application Icons
funnel, mail, sorting
Black
16x16
UI
Gnome icons
Filters
24x24
Filters, Charcoal
invert, Filters
Filters, Art, pop
Filters, posterize
23x23
remove, Filters, noise
smooth, Filters
Filters, Apply, mail