Adobe Photoshop is graphics editing software that allows users to manipulate images by adjusting features like layers, brightness, blur effects, and more. The document discusses using Photoshop to edit photos for a magazine cover design coursework, including transforming lighting and adding effects. Serif Photo Plus is also mentioned as photo editing software used for the coursework to adjust contrast, brightness, and crop images. Microsoft Publisher and additional tools were utilized to layout and design the magazine pages.