Photopainter is a powerful, full-featured professional digital painting application that allows users to create amazing artwork using their own photos as a canvas. It is designed for everyone from beginners to experienced professionals, and features an intuitive interface, a powerful brush engine, and a comprehensive library of tools and effects. With Photopainter, users can easily create stunning digital paintings, retouch photos, and design their own works of art. Photopainter also provides a range of tutorials to help users get started.
Discontinued The last stable version was in 2015. See https://pinta-project.com/pintaproject/pinta/releases/1-6