Seashore is an open source image editor for Mac OS X s Cocoa framework. It features gradients, textures and anti-aliasing for both text and brush strokes. It supports multiple layers and alpha channel editing. It is based around the GIMP s technology and uses the same native file format. However, unlike the GIMP, Seashore only aims to serve the basic image editing needs of most computer users, not to provide a replacement for professional image editing products. Seashore was created by Mark Pazolli who, together with a handful of other developers and helpful users, still develops it to this day.