PHPR 8.0 and 9.6 side by side

Sure can so long as you have licenses for both <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=reply&id=80955&image=1&table=forumreplies' class='bbc_emoticon' alt=':)' />

I have 3 versions running on my machine: 8.1, 9.0 and 9.6.

I am using ASPRunner.Net, but I doubt if there is any difference in this regard.