What is the fine-grained topic of the following text: GIMP ( /ɡɪmp/ GHIMP) (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.GIMP is released under GPLv3+ licenses and is available for Linux, macOS, and Microsoft Windows. Only return the topic.
GIMP (GNU Image Manipulation Program)