Some of the most popular online image editing software services. Photoshop beware!
Five Best Online Image Editors – Image Editing – Lifehacker.
Via Lifehacker
Sumo Paint
http://www.sumopaint.com/web/
Pixlr
http://www.pixlr.com/
Adobe Express
https://www.photoshop.com/express/landing.html
Picnik
http://www.picnik.com/
Aviary Phoenix
http://aviary.com/tools/phoenix
The best rated online image editor: Aviary