PNG ICO SVG MORE
Arrows
Glyph
Developer Set
settings, configuration, Setting
Black
512x512
PNG SVG MORE
Signs & symbols
Miscellany Web icons
tools, Screwdriver, Wrench
298x512
PNG ICO ICNS SVG MORE
Mixed
Free Misc Icon Set 1
Drawing, graphic, Brush
Locations - Outline
Working, Gear, tool
Locations - Solid
Options, tools, preferences
iOS7 optimized
Miu
Setting, tools, Gear
configuration, Setting, Circle
Simple darkcon
tools, tool, configuration
UI
Very Basic. Android L (Lollipop)
configuration, menu, tools
PNG ICO ICNS MORE
Simple Icons
settings, tools
Network & communications
Iconico
configuration, Options, config
1024x1024
tools, settings, preferences
Social Media
creative, Bing, webmaster
Octicons
tools
WPZOOM Developer Icon Set
Business & finance
Devine Icons Part 2
128x128
Desktop apps
Ourea Icons
Administrative, tools
256x256
SEO & web
Metro Uinvert Dock
And, performance, Information
Flat UI Icons Free
tools, preferences, settings
Metro UI Dock
tools, Mb
PNG MORE
Black ToolBar Icons
tools, settings, tool
40x40
Wireframe mono icons
Wrench, settings, tools
48x48
Ecqlipse 2