Wallhaven - Your source for the best high quality wallpapers on the Net!
InterfaceLIFT - High-resolution widescreen wallpapers, desktop icons, and themes for Mac OS X, Microsoft Windows...
Picky Wallpapers - Picky Wallpapers is a good website that has the selection of HD quality wallpapers only.
HDWallpaperGreat.com - HDWallpaperGreat.
Ultra HD Wallpapers - One site with wallpapers at high resolutions (UHD 5K, ultra HD 4K 3840x2160, full HD 1920x1080) for phones and desktop. Download 4k backgrounds to bring personality in your devices.
WallpaperFusion - The best multi-monitor and Eyefinity wallpaper images, all in one place!