GIMP - GIMP is a multiplatform photo manipulation tool.

SolidCAM - The ‘Best-in-Class’ CAM Solution for Efficient & Profitable CNC-Programming Inside Your CAD

Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.

Vectric Aspire - The complete software solution for CNC Routing,

MyPaint - MyPaint is a fast, distraction-free, and easy painting tool for digital artists.

Autodesk Fusion 360 - Integrated CAD, CAM, and CAE featuring collaborative editing and cloud-based computation.