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Mobile apps
Flat
iOS 7 Style - Metro UI Icons
onenote, Metroui
MediumVioletRed
512x512
Squareplex
onenote
DarkOrchid
Desktop apps
Circular icon set
Black
256x256
UI
Metro UI Icon Set
15, onenote
Purple
Social media
Metro UI Dock
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onenote, Mirror
640x640
Mirror, onenote