Recommendation for counting authorized users of Cognos across an account

[Ann]

Hi Guys

Can anyone suggest a  method/solution for counting licenses without manual calculation/intervention, i.e. a user should be able to push a button and get the current user count.  This should include all types of users, dev, test, and prod, and we need to be able to have a separate count for Admin vs. end users. 

[Arsenal]

I believe BSP Software has a free tool for something like this on their site