Seashore is an image editor for Mac OS X, which was influenced by the GIMP and written using the Cocoa API.http://seashore.sourceforge.net/http://sourceforge.net/forum/forum.php?thread_id=826648&forum_id=244287 It is released under the GNU General Public License.http://sourceforge.net/projects/seashore/ Seashore uses GIMP's native file format, XCF, and has support for a handful of other graphics file formats, including full support for TIFF, PNG, and JPEG, and read-only support for BMP, PDF and GIF.http://seashore.sourceforge.net/feature.php Seashore offers a smaller number of features in comparison with GIMP, including layers and alpha channel support, gradients and transparency effects, anti-aliased brushes, tablet support and plug-in filters.