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
openCanvas is primarily focused on raster graphics and photo editing, making it suitable for those who want to work with photos and illustrations, while Seashore excels in vector graphics and offers a more customizable interface with accessibility features. Both applications have their strengths and weaknesses, catering to different types of users and project needs.