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
PhoXo is a free image editing software specifically for Windows users, known for its user-friendly interface and good performance, but it lacks advanced features and plugin support. On the other hand, Seashore is a stylish image editor for macOS that supports plugins and offers good layer functionality, albeit with moderate performance on larger files.