Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Affinity Publisher - Professional desktop publishing app
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Contenta Publishing Suite - Contenta Publishing Suite is an advanced-level and web-based publishing software solution offered by RWS that allows you to create good quality content and offers you optimized steps and procedures to publish the content successfully.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
RebelMouse - Publishing platform for distributed content