Darkly

Darkly is a free, open-source paint editor designed for digital artists. It features a node-based brush engine for infinite customization, Procreate-like stroke stabilization, and unique "dark arts" tools like Veils—nondestructive visual filters that help with composition, blank page syndrome, and creative exploration. The app runs offline without login, streams webcam or 3D content into layers, and prioritizes protecting user artwork.

The project describes itself as a Photoshop alternative where painters are first-class citizens. Available as a web demo and downloadable for Windows, macOS, and Linux, Darkly is built by the community and committed to remaining free forever. According to build evidence, the project uses Claude for development.