Identify objects with zero instances

I have multiple objects and their instances in a given scene. I am trying to clean my Objects explorer and would like to list ONLY objects that have at least a single instance in the scene and remove objects that are not used in the scene.

I tried “Instances List Panel” to identify objects that have zero instance, but it only shows objects with at least one instance. The only option for me to achieve what I need is to click each objects in the Object Explorer and see if they have zero value in “Select Instances on the Scene” and delete them.

Any quick way to identify/list all objects with zero instances?

Selection the whole scene with the mouse, then you will see the unhighlighted objects in the Objects explorer.

Nice solution! However, it doesn’t work for the objects on the hidden layers. :frowning: