GIMP - GIMP is a multiplatform photo manipulation tool.
Touchretouch - “…there's no easier way to remove unwanted items from your images.
Fiji - Fiji: A batteries-included distribution of ImageJ.
SUPERIMPOSE X - Superimpose X is the most powerful and intuitive photo-editing application.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
BeautyPlus - BeautyPlus is a professional level of photo-editing app that makes it easy for you to edit your images as a professional photographer.