Wallhaven - Your source for the best high quality wallpapers on the Net!
Imageric.com - Amazing free stock photos, vectors and videos in one place…
InterfaceLIFT - High-resolution widescreen wallpapers, desktop icons, and themes for Mac OS X, Microsoft Windows...
Reshot - Tons of uniquely free stock photos. Handpicked & non-stocky
Simple Desktops - A collection of wallpapers designed to make your computer beautiful without distraction.
Freerange Stock - Freerange Stock is a free stock image website.