Open Source Digital Painting for Linux

Lumi-o is designed for layered raster painting, deliberately lean and stable. Wacom tablet support has been tested extensively to deliver the smooth, responsive input professional illustration requires.

Built on GIMP’s core architecture, Lumi-o strips away general-purpose complexity in favour of a dedicated painting environment where data integrity comes first. High-speed auto-saving and a rolling incremental save system protect your work without interrupting your flow.

Lazy loading removes fixed memory ceilings, letting you manage large, complex projects and massive canvas dimensions without running into RAM limits.

Lumi-o is developed on Debian 13 with the Cinnamon desktop. If you’re coming from Windows, installing Debian is the first step: How to Install Linux.