What are free tools for setup viewport 3D models?

Free tools for setting up 3D model viewports include Blender, SketchUp Free, and View3D—all let users adjust camera angles, lighting, and display settings at no cost. Blender is good for advanced viewport customization (like split screens or orthographic views) for detailed work, SketchUp Free simplifies quick scene setup with real-time previews, and View3D is a browser tool for easy drag-and-drop adjustments. If you’re new, start with SketchUp Free’s intuitive interface; for more control, try Blender’s tutorials to learn viewport tricks like camera locking or split views.