These freeware programs, such as OpenOffice.org and RoboForm, just keep getting better with age
Irfan Skiljan's IrfanView has long been my go-to tool for cropping, resizing, and otherwise manipulating images. It's not an editor so much as a tweaker, enabling you to make simple changes to a screenshot or photo, and to add a few special effects when the occasion warrants. IrfanView loads within a second after you click its icon, and it occupies just 1.5MB of space on your hard drive. The program hasn't seen many major changes in recent years, but that's a good thing.