Regard3D - Regard3D is a free, multiplatform, open-source structure-from-motion application.
Unity - The multiplatform game creation tools for everyone.
ContextCapture - Acute3D develops breakthrough photogrammetry software solutions to automatically turn photos into photorealistic high resolution 3D models
Godot Engine - Feature-packed 2D and 3D open source game engine.
Skycatch - Commercial drone data solutions for modern businesses.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.