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.
Unity - The multiplatform game creation tools for everyone.
MyPaint - MyPaint is a fast, distraction-free, and easy painting tool for digital artists.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.