GIMP (GNU Image Manipulation Program) is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks. It is available on multiple platforms including Windows, macOS, and Linux.
GIMP offers a wide range of tools for image editing, such as paint tools, color correction tools, cloning tools, and selection tools. Additionally, it supports a variety of file formats, including JPEG, PNG, GIF, BMP, TIFF, and PSD.
GIMP has a large and active user community that provides extensive documentation, tutorials, and plugins for the software. It is a great option for those looking for a powerful, free alternative to commercial image editing software.