I always searched for a clean little 3D level editor, where you can visually place your 3D models and save this scene to a file. But unfortunately the only level editors I've come across were for 2D only or integrated in big engines (Unreal, Unity, ...). So I have decided to write my own and here it is: a standalone 3D level editor.

You may already have it, but if not, create one: a base directory, with all your 3D assets in it. It is no problem, if your models are managed within subdirectories. Choose this directory as your base directory.