Picasa

Picasa is a free tools web 2.0 which is used to modificate your photos, for using this tool you please download it and if you have the download you  will can modificate photos without enter in internet.

Picasa can change the light of the photo, the color, and a lot off change. When you finish of all can share it with friends in social networks, with using an e-mail...

http://picasa.google.com/intl/es/