I am looking for a software to manage my Microsoft Powerpoint slides. Over the years I have produced very many powerpoint presentations. While doing that I reused countless slides (as they were or with slight modifications) while producing new ones all the time. Now I have this huge amount of presentations, partly overlapping and redundant.
What I am looking for is a software to manage all my slides and ideally with the ability to manage different versions of one slide.
It would also be great if it was not a cloud/online solution.
A great bonus would be the ability to use it in groups to also have access to slides of other members of the group.