Free Photoshop Alternatives

[Pat]

11 Outstanding (Free) Alternatives to Photoshop (http://www.thephotoargus.com/freebies/11-outstanding-free-alternatives-to-photoshop/)

[jonrayner]

Photoshop also have an online editor, which was not in the list. Not sure how good it is and how it compares with the others in the list, but thought I would mention it.
Jon