Here's the link:
Online Image Editor - Pixlr Express - Autodesk Pixlr
Here's a view of the controls.
I like it because it's free with no need to join anything.
You can use this editor then later use another one on the same photo. Like FotoFlexer.
Maybe they'er not as good as professional programs but they are easy to learn and more than enough for almost all types of photographs.
Here's my other post about photo editors:
Free On-Line Photo Editor- FotoFlexer