Icons

Ultimate Free Icon Set: 1000 Free Icons (by Freepik.com)

Textures

100 Free Blurry Textures

PSD | UI

Flat UI

PSD

FREEBIE: Flat Radial Graph PSD

PSD | UI

Freebie PSD: Flat UI Kit

Icons | PSD

24 Flat Icons (PSD)

PSD | UI

Freebie PSD: Flat / UI Kit

PSD | UI

Flat UI Free – PSD&HTML User Interface Kit

Icons | PSD

Apple devices – Flat icons (PSD)

Textures

Free download: 25 Colorful Grunge Textures

PSD | UI

iOS 7 GUI PSD

Icons | PSD

Tab Bar Icons iOS 7