Actually, I have/had to use the well known "NotesUserActivity" Library from AGECOM in Australia, which provides a very nice way to access statistical information. It uses C-Api functions to access the User Activity data, which is stored in each database and can be viewed on the information tab of the database properties.
Unfortunately, this library and its contained functions and classes aren't supported anymore. Now, this code allowing to access the database user activity data seems to crash Servers or at least has direct impact to the Server's stability since version 10, because of changes on OS level and Lotus Script running on a 64-bit machine.
Anyway, in order to provide an easy way to use this data for such fency stuff like "Dashboards" etc. and to provide insights of the life of Notes databases, I think it would be a highly appreciated functionality to allow this data to be accessible without a C-Api call.
Additional background:
Especially, when it comes to critical questions in todays times, why a company still needs to run Domino, it is good to use this kind of transparency for discussions, because it provides very granular possibilities to verify if databases are used just by machines, real users, administrative users and give insights in which regions of the world databases are still used. And last but not least, it can provide arguments FOR DOMINO in context of a complex application scenario, where there is no application available as a potential target solution.
And no, unfortunately, all other possibilities like DomLog, 3rd-Party-Tools, http-Stack etc are not providing the same level of possibilities to combine all the information with this level of performance and easyness of extraction.
On top of that: It would be free of costs as well!
And observation concerning.... usernames still can be individually hashed (anonymized) by your own code, so even in terms of GDPR this data could be used legally, if that is required.