Scene Collections Manager
This add-on allows you to easily manage collections and subcollections and is particularly suitable for well-structured projects with a large number of collections.
Through this add-on it is possible to create selections of collections and save them in a special file so that you can reload any selection at any time. This way you can create different configuration files with specific collections setup to recall in no time, for example depending on the type of render you want to start or the camera you want to use, there are so many use cases.