What are the main differences in Aperture and iphoto? I have thousands and thousands of photos in my iphoto library. I have been wondering if Aperture would be a lot better for sorting and organizing that many photos or if there is some other application that would be even better for a massive collection like mine. I don't care about the editing features because I do that in photoshop. What I am looking for is something that I can easily organize that many photos with. Also, does anyone know if there is anything that does the same thing as Windows picture and fax viewer for the Mac photos folder?