PicPodz is on the Mac App Store (http://is.gd/iAEWHn)
PicPodz is an OS X 10.10 desktop photo slideshow in the form of a sphere. Just drag images into the window then change modes. Pics will change randomly. Resize or maximize to suit your needs.
I recommend organizing copies of pics into folders, rather than using originals. Just select all images and drop them into the window.
Using something I've made? http://www.arrall.com Please, consider contributing in some way to any app I'm working on.
(this is a very old project)
Place, spin, chase, and warp around photos in a 3D setting. Screen saver. Visual organizer. Study tool.