Getting number of instances of asp.net website
<p>I have an asp.net website and i want to get the number of users currently viewing my site. I am aware that there are some third party softwares available, that would give me the list of the users online but i don't want to do that.</p>

<p>Does anyone know how this can be achieved in asp.net? May be if there are any server variables that would keep a track of the website instances that gives the number of users currently visiting the site. Please help me.</p>
