Openverse - Openverse is an Openly Licensed Images and Audio database and a growing community of photographers, illustrators, and musicians who share their work under a Creative Commons license.
Wallhaven - Your source for the best high quality wallpapers on the Net!
PixLoger - PixLoger is a stock photos website that offers high-quality stock images, vectors, and videos without any watermark.
InterfaceLIFT - High-resolution widescreen wallpapers, desktop icons, and themes for Mac OS X, Microsoft Windows...
Good Stock Photos - Good Stock Photos is a stock photos database website built to help people find great stock photos they can use on blog posts, articles, online stores, and more.
Simple Desktops - A collection of wallpapers designed to make your computer beautiful without distraction.