Adobe Photoshop, or simply Photoshop, is a graphics editor developed and published by Adobe Systems. It is the current market leader for commercial bitmap and image manipulation, and is the flagship product of Adobe Systems. It has been described as "an industry standard for graphics professionals." Although originally designed to edit images for paper-based printing, Photoshop can also be used for a wide range of other professional and amateur purposes for web design and print.

The current (10th) iteration of the program was released on April 16, 2007 and is marketed as "Photoshop CS3." "CS" reflects its integration with other Creative Suite products, and the number "3" represents it as the third version released since Adobe re-branded their products under the CS umbrella. Photoshop CS3 features additions such as the ability to apply non-destructive filters, and new selection tools named Quick Selection and Refine Edge that make selection more streamlined. On April 30th, Adobe released Photoshop CS3 Extended, which includes all the same features of Adobe Photoshop CS3 plus capabilities for scientific imaging, 3D, plus high end film and video users.