Gimpshop software is a free and open-source photo editing software that is based on the popular GIMP software. It offers a user-friendly interface with customizable menus and toolbars, making it easy to navigate. It also has advanced features such as layer masks, brushes, and filters, allowing users to create professional-looking images. Additionally, Gimpshop supports a wide range of file formats including RAW files, PSD, and JPEG.