Paint.JAVA is a cross-platform Paint.NET clone. It aims to be less complicated than GIMP, better than other Paint.NET clones, and good for simple pixel art.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.