Thank you so much for donating. It is always appreciated!
This add-on displays the number of users who are watching each Resource:

You can also view a list of the users:

HOW TO INSTALL
The easiest way to install this add-on is if you use the Add-On Installer.
Alternatively:
- Download the zip file.
- Extract its contents to your hard drive.
- Upload the contents of the upload folder to the root of your XenForo installation.
- Complete install via the Admin CP using the provided XML file.