Now you can use Picmeleo to let visitors easily to online photo editing without leaving your website. Picmeleo is a free online photo editor that any third-party developers can integrate to their website. Your visitors/users can upload and edit images for your service. The integration is very easy just coping a few lines of embed code and Picmeleo is working on your site. Picmeleo online image editor has all basic features like crop, rotate, autofix, scale, colors balance and contract, brightness and filters such as grayscale and sharpen, redo and undo function included. You can custom the tools of Picmeleo anytime you want on your own editor. It also has built-in multilanguage support and you can set the language in the online admin interface.

http://www.picmeleo.com