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. Developed by Mark Pazolli
License: Open Source
Pixelmator is a robust image editing tool with a wide range of features and a focus on digital painting and advanced editing, while Seashore is a simpler, open-source option that caters to basic editing needs and is more accessible for beginners.