PNG ICO ICNS MORE
Desktop apps
Glyph
Ourea Icons
Administrative, tools
Black
256x256
SEO & web
Metro Uinvert Dock
RoyalBlue
And, performance, Information
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Mixed
Flat UI Icons Free
tools, preferences, settings
512x512
UI
Metro UI Dock
tools, Mb
Mini icon set Part 1
tools
DarkSlateGray
48x48
DarkGray
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Business & finance
Black ToolBar Icons
tools, settings, tool
40x40
16x16 Free Toolbar Icons
settings, tool, config
SteelBlue
16x16
Wireframe mono icons
Wrench, settings, tools
Ecqlipse 2
128x128