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Network & communications
Pixel
16x16 Free Application Icons
Schedule
ForestGreen
16x16
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Flags
TSGK Flags
Sa
Simbu
Social media
WPZOOM Social Networking Icon Set
this, share
38x38
Desktop apps
Webset Icons
Stumbleupon
48x48
Splashyfish
icon | Icon search engine
20x20
slider
Sb
UI
Silk
Spellcheck