We have a Graphpad/PRISM site-license.  

If you click the link below and you'll receive
an email message with the license key and a link for you to download the software.

 This software is only available to the Dana-Farber Community --  only people with <username>@dfci.harvard.edu email addresses are
covered by this agreement.   Your good citizenship is required.

http://graphpad.com/paasl/index.cfm?sitecode=dfcii

Sign up yourself to see how it works. Then you can
re-distribute this page, or a link to this page,  to anyone in the DFCI community who would like the software. As soon
as a person registers he/she will be sent download links to the
software and serial numbers by return email. Everyone using Prism under
this license will use the same serial numbers -- one for Windows and
one for Mac.

People can register as many times as they need to in order to
install the software on multiple computers. The license allows it to be
installed on home computers and personal laptops as well as
company-owned computers.