Pinta

Pinta is a free, open-source painting and image editing program built with GTK. Modeled on Paint.Net 3.0, it gives you an approachable desktop editor for drawing and everyday image work on Windows, macOS, and Linux.

The interface stays simple and intuitive while still covering the essentials: a full set of drawing and editing tools, real-time effects you can preview as you adjust them, and unlimited undo so you can experiment freely.

Pinta keeps your work private - its privacy policy states the program will not send information to other networked systems unless you or whoever installs it requests it. The code is free software under the MIT License.