Buy UI Set Components Featuring Flat Design by fet on GraphicRiver. UI is a set of beautiful components featuring the flat design trend Font: PT-Sans
Metro style Ui Kit *** "Just practicing the metro style. Made myself an useful kit to use in upcoming themes, also stay tune for the release of this kit." by Nikola Mihaita, via Dribbble ***
Meipai by ididi Not exactly UI but the coolest app icon I've ever seen
Dribbble - Memory chart by Zolotco D.