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Desktop apps
3D
Free Social Media Icons
telephone, phone number, numbers
Green
512x512
Business & finance
Once again
Contact
DodgerBlue
48x48
Mixed
Iconza
Book, Address book, contacts
DarkSeaGreen
32x32
Signs & symbols
Free 3d Glossy Interface Icon Set
Gear, settings, preferences
64x64
preferences, tool, Applications
Black
E-commerce & business icons
Info, Contact
256x256
Computer & hardware
FS Icons Ubuntu
invisible, Contact, overlay
Dnd, Skype, Contact
OrangeRed
Contact, Skype, away
Gold
online, Skype, Contact
YellowGreen
overlay, away, Contact
Skype, Contact, offline
DarkGray
Contact, Available, Skype
Goldenrod
Contact, Busy, overlay
invisible, Contact, Skype
UI
Gnome Web Icons
new, Contact, Gnome
Silver
Contact, new, 48
LightSlateGray
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The Spherical icon set
contacts, Call, telephone
OliveDrab
128x128
Discovery
Contact, new
Human o2
Vcard, Contact
Lavender
Contact, list, user
CornflowerBlue
Photography & graphic design
Dark Glass
overlay, Contact, Busy
Crimson
Nuvola
Identity, Contact