Adobe recently launched a free online version of Photoshop. it appears to share the name of their regular photo application more than anything else. From what I’ve see it is kind of like Flickr with some image editing capabilities aimed at the home user. If you need a more powerful image editing, but don’t need the full version of Photoshop, Photo Elements ($99) is a good choice for Mac or Windows. On Mac, there is a nice program called Pixelmator ($59) that I’ve been pleased with. Serif Software also has a basic Windows photo editing program that will do what many people need. They have free and paid versions ($10 to $79). Also the Gimp is worth checking out. It is open source (and free) and runs on Mac, Windows, and Linux.