RenderMan 21 free non-commercial

[Mike]

Step 1: Register for Non-Commercial RenderMan
Before downloading the software, you are required to have a RenderMan Forums Account. 
You must log into the RenderMan Forums to continue:

If you ALREADY have an account in the RenderMan Forums ...
Please login to the RenderMan Forums
Once you've logged in, return to this page and you can proceed after filling out a short survey.
If you DON'T have a RenderMan Forums Account, you must create one now.
To successfully create an account, complete the following:
      Register: First, Create a RenderMan Forums Account
      Confirm Registration: Second, you will receive an email with instructions to confirm your registration.
      Return to this page: When you've logged in, you'll be able to proceed after filling out a short survey.

https://renderman.pixar.com/view/NCR-Register