The GIMP

The GIMP (GNU Image Manipulation Program) is a free, open-source software used for creating, editing, and retouching images and photos. It offers a wide range of tools similar to professional programs, allowing users to modify pictures, design graphics, and prepare images for various projects. GIMP supports advanced features like layers, masks, and filters, making it suitable for both simple edits and complex visual work. It's popular among hobbyists, artists, and professionals who need a powerful image editor without the cost of commercial software.