Since Adobe Bridge no longer works with a Mac, I needed something similar to view and sort large numbers of photos. This is good, but there are some other features that need to be added, such as the ability to choose a color for the space outside the image (this only does white; black would be better; choosing one's own color would be best of all.) Would be nice to see somewhere how many photos are in a folder. You should be able to choose large numbers of photos by clicking the first, and shift clicking the last. Would be nice to have the space bar bring an image to full screen.