GIMP - GIMP is a multiplatform photo manipulation tool.
Saint Paint Studio - Saint Paint - The Essential Image Editor
Fiji - Fiji: A batteries-included distribution of ImageJ.
AliveColors - AliveColors is comprehensive graphics and photo editing software for Windows and Mac.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Sagelight - Sagelight is a comprehensive editing platform that allows adding multiple features to the images by improving, retouching, modifying the selective pics with high-quality work.