You can download the software from the trial page created by the developers. When you access the page, there is the possibility to fill it with your details. After this procedure, access your email and the developers will send you the download links. One thing I have noticed is that you can't choose the version of the software to download which means it's possible they offer the download only for the latest version.
Trial request page: http://www.punchcad.com/trial.aspx