John’s Background Switcher puts beautiful full-screen photos and stunning montages on your desktop from places like your computer, Flickr, Facebook, Instagram and plenty more places. 

You can specify which pictures to choose from:

• Individual pictures on your computer.
• Folders containing pictures on your computer such as ‘My Pictures’.
• Flickr photo sharing – selecting pictures by person, tags, sets or just plain random. You never know what you’re going to get next!
• Facebook – your friends photos on your desktop!
• Instagram – photos from the most awesome photo app out there!
• Vladstudio wallpapers – choose from the coolest wallpapers on the net!
• 500px – the best high quality photography site on the web!
• Any Media RSS feed – choose pictures from sites like DeviantArt, Photobucket, LOLCatsand Tumblr blogs amongst many others!
• Phanfare web albums – keep up to date with your friends and family.
• smugmug photo galleries – yours, your friends, anybody’s!
• Pixabay – the best place to find royalty free photos on the net.
• Last.fm – see the music you listen to on your desktop!
• Dropbox – your stuff, anywhere, and now on your desktop too!