Pixlr - Pixlr® makes it easy to transform everyday images into stunning works of art.
Manual Camera for iPhone - Custom exposure for your iPhone camera
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
Snapseed - Snapseed is a photo enhancement and sharing app with a powerful suite of imaging filters and tools...
Adobe Photoshop Express - Easily edit and share your photos in no time!
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.