Unsplash Wallpapers for Mac (Official) - Curated, HD desktop background photos from Unsplash.
PixLoger - PixLoger is a stock photos website that offers high-quality stock images, vectors, and videos without any watermark.
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.
StockSnap - Beautiful, free stock photos
Wallpaper Wizard - Wow-worthy backgrounds for Mac
Magdeleine - Magdeleine is a stock photos website offering thousands of royalty-free, high-quality photos for personal and commercial projects.