Eugenia LPixelorama is a pixel-based painting app (e.g. to create icons, or pixel art for vintage computers). The interesting part about it is that while it's an app, it's written in Godot, a gaming engine.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.