I read this article today: Occlusion Culling in Unity. Good write-up.
I also tinkered a bit with Cocos Creator today. It's hit version 3 and the hype for its 3D features is strong so I took a look out of curiosity.
The setup should feel familiar if you've used Unity. You have the scene hierarchy, asset library, property inspector, scene view and other typical sub-views you might find in similar game editors.