Windows only: MoboPhoto is a portable photo suite. The stand alone 1.6MB executable has a basic photo editor, gallery builder, and a batch tool for mass resizing and renaming. The basic editor is fairly limited in comparison to standard desktop editing suites, but that can be expected in such a tiny portable application. It is sufficient for basic fixes like red eye editing but you won’t be doing any fancy touch up work beyond the basics. The gallery builder allows you to generate basic HTML image galleries with thumbnails, again nothing extremely fancy but perfectly serviceable. If you need a more robust and portable image editor, check out GIMP Portable. MoboPhoto is freeware, Windows only.