PNG ICO ICNS MORE
Network & communications
Pixel
16x16 Free Application Icons
tools, job, production
Black
16x16
settings, generator, Applications
reductor, work, generator
UI
Gnome icons
config, system
48x48
Tango
Lock, screen, system
32x32
Proxy, preferences, system
Installer, system
update, software, system
forum, system, Users
preferences, tools, system