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
Seashore is known for its user-friendly interface and simplicity, making it suitable for beginners, while MyBrushes offers a more comprehensive set of features designed for professional artists, albeit with a steeper learning curve.