Blender - is a free and open-source 3D and 2D computer graphics software.

Toolset used for creating animated films, visual effects, art, 3D printed models, motion graphics, interactive 3D applications, virtual reality.

Godot - is a 2D and 3D, cross-platform, free and open-source game engine released under the MIT license.

Godot has its own built-in scripting language, GDScript, a high-level, dynamically typed programming language very similar to Python.

Inkscape - is a free and open-source vector graphics editor used to create vector images, primarily in Scalable Vector Graphics (SVG) format. Other formats can be imported and exported.

Inkscape file format support: SVG, SVGZ, PDF, EPS, AI, CDR, and many others.

Scribus - is free and open-source desktop publishing (DTP) software available for most desktop operating systems. It is designed for layout, typesetting, and preparation of files for professional-quality image-setting equipment.

Scribus can also create animated and interactive PDF presentations and forms. Example uses include writing newspapers, brochures, newsletters, posters, and books.

GNU Image Manipulation Program - is a free and open-source raster graphics editor, used for image manipulation (retouching) and image editing, free-form drawing, transcoding between different image file formats, and more specialized tasks.

Krita - is a free and open-source raster graphics editor designed primarily for digital painting and 2D animation.

It features an OpenGL-accelerated canvas, colour management support, an advanced brush engine, non-destructive layers and masks, group-based layer management, vector artwork support and switchable customisation profiles.