An interface defines a lot about what you are working on. And the same an awesome graphic user interface defines a lot about the graphic interface you are having on board. In this article, we have collected awesome (but yes free) GUI sets for you which you definitely wish to use for your future projects. Polaris UI Image Source: DesignModo Balio Image Source: Webdesigner Depot Pillow Image Source: Dribbble Square Image Source: DesignModo Dashboard Image Source: GraphicsFuel Apollo Image Source:…