Krita is a free and open-source drawing software that is powerful and completely free. It does not require registration, has no advertisements, trial periods, or commercial restrictions. It can be used for creating concept sketches, illustrations, comics, animations, backgrounds, and 3D textures. It supports features such as digital tablets, pressure sensitivity, anti-aliasing, layers, filters, and color management. It is compatible with Windows, Linux, and macOS operating systems.