Downloading PDFwriter 1.2 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. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
PDFwriter is a printer driver for OS X, which will let you generate PDF files by simply printing. PDFwriter is heavily based on, but far superior to, CUPS-PDF. It doesn't use ghostscript to generate PDF files; instead it uses the OS X internal PDF capabilities.