CODESYS - CODESYS - the IEC 61131-3 programming system.
Unity - The multiplatform game creation tools for everyone.
4diac - Eclipse 4diac™ provides an open source infrastructure for distributed industrial process measurement and control systems based on the IEC 61499 standard.
Godot Engine - Feature-packed 2D and 3D open source game engine.
RobotStudio - RobotStudio increase the profitability of your robot system by letting you perform tasks such as training, programming, and optimization
Blender - Blender is the open source, cross platform suite of tools for 3D creation.