Downloading sunCase 3.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The program lies within Design & Photo Tools, more precisely Viewers & Editors. This software for Mac OS X was originally designed by sunprotectingfactory. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
sunCase is an application that will let you print CD or DVD covers, to the right size, on a regular printer (scaling is tuned to print fine on A4 or Letter). You can drag the images directly from your browser, or the finder. Purchasing sunCase is NOT free software. It is freely available, but it is what one would call cheapware. The base (official and kindly requested) price is 5 Euros (equivalent to 5 dollars).
You may want to check out more Mac applications, such as UnCoverIt, TurboCAD Mac Designer or jalada Collage, which might be related to sunCase.