Identifying OS connecting to exchange 2013

Hi

We would like to figure out a way to see all different kind of operating systems which are connecting to our Exchange 2013 server. Not only for ActiveSync devices, also for the Outlook Anywhere devices.

In the past we used ExMon with Exchange 2007 but I haven't found any solution for Exchange 2013 so far.

Any suggestions for a good tool or if possible by PowerShell, a Script to get all the Operating Systems?

Thanx