Pixlr - Pixlr® makes it easy to transform everyday images into stunning works of art.
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.
Fotor - Fotor is an all in one visual platform. It includes photo editor, collage maker, and graphic designer. You are free to make a visual look more beautiful.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
GIMP - GIMP is a multiplatform photo manipulation tool.