John's Background Switcher

John's Background Switcher puts beautiful full-screen photos and stunning montages on your desktop. Choose the photos from your own collection on your Mac or websites like Flickr, Facebook, Pixabay, Instagram, Vladstudio and many more besides. You'll never know what's coming next -- maybe photos from a recent holiday, landscapes from far and distant lands, pictures of small kittens or equally small dogs. If you're having a tough day, just take a look at your desktop and John's Background Switcher will get you through it!

Features:

• Show single photos or a variety of randomly generated beautiful montages on your desktop
• Choose photos from folders on your Mac or iPhoto albums and events
• Rich Flickr, Facebook, Instagram, SmugMug, Pixabay, Vladstudio and Dropbox integration
• Media RSS photo feeds (so you can use a great many more photo sites)
• Multiple monitor support (show the same background all monitors, different pictures on each monitor or only on one monitor)
• Switching intervals from every 10 seconds to 7 days
• A variety of post processing effects like grayscale, sepia and desaturation
• Lots of new features in the works for future versions (I have a list as long as your arm!)

Once set up JBS quietly runs in the background changing your desktop and stays out of your way. And if you don't love it, tell me what you'd like it to do from the support link and I'll add it as soon as I can!

• You can now choose from albums in the awesome new Photos app (if you're running the latest version of OS X). Since Photos is brand new, if you find any problems then please let me know about it from the support link so I can fix it!
• JBS now supports 500px as a native image source now that they've changed their API to allow full size image downloads (which was why it wasn't included previously in case you were wondering).
• When you delete picture sets you're now asked if you're really sure you want to. No more accidents!
• Due to API changes by Facebook it's no longer possible for JBS to show you photos from your friends. Now you can only choose from your own photos or those you've been tagged in.
• On rare occasions JBS could crash when resuming from sleep after choosing an iPhoto album. This has now been corrected.
• When authenticating with Instagram an error had recently started showing up. This has now been corrected.
• Fixed a crash when failing to find an iPhoto library when there is no user Pictures folder.
• If you added a folder of pictures to JBS that contained a sub-folder that was a symbolic link to a folder elsewhere, that could cause JBS to not find any pictures. This rather confusing scenario has now been fixed. Yay!
• Fixed a long standing random crash when generating montages. I hate random crashes. Now there's a little less hate in the world.
• If your hard disk was out of space and you were particularly unlucky JBS would crash. Now it no longer will. Although it won't do anything about your luck I'm afraid.
• Corrected a crash when choosing from a new SmugMug photo album, again if you were unlucky.
• A few other minor fixes too small and tedious to list.