Eu uso vários ícones nos meus designs e estou sempre procurando por ícones bem feitos para renovar meu arsenal de elementos para meus próximos projetos. Bem, hoje eu escolhi alguns sets grátis que você pode baixar para usar quando precisar. Aproveitem!
Sei que existem muitos outros ícones grátis disponíveis na web, então fiquem a vontade para compartilhar mais links com a gente nos comentários.
Flat Icons
by Alberto
Simple Flat Icons
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Social Glyphs - Mini Icons
by Joel Siddall
Social Media Mini Icons in PSD
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Vector Web Icons
by Yunmie Kim
Icecreamcons are 96 free Photoshop vector web icons in 32 by 32 px boxes
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350 Vector Web Icons
by Brankic1979
A set of 350 pixel perfect glyphs icons, perfect for apps, websites or just about anything you can think of. You may use this icon set for both personal and commercial use, which means this resource can be used in any project without worrying about licensing.
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Vector Social Icons
by Luke Taylor
Download the attached .eps file for a great set of free social media icons.
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Square Social Media Icons
Set of 28 icons. They are in png format, but in 500x500 pixels which should be more than enough.
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Social Media UI Buttons
by Ivo Ivanov
Free scalable circle social media buttons (with custom shapes icons) in .psd format
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Icon x256 Set
You can use & change it without legal problem. Let's Rock mates!
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Batch 300+ Icons
A lovingly designed and crafted suite of 300+ icons for web and user interface design.