What are some alternatives?
When comparing PrimoPDF and Ghostscript, you can also consider the following products
doPDF - Multi-language. doPDF is the ONLY free pdf maker whose interface is currently available in 33 different languages and has a website translated in 30 languages (and growing, thanks to our translators).
Bullzip PDF Printer - Free PDF Printer - Create PDF documents from Windows applications. Supports Citrix, Terminal Server, Windows 8, Windows Server 2012, Windows 7, Vista, 2008R2, 2008, 2003, and 2000. Works with 32 and 64 bit systems.
PDFCreator - PDFCreator converts every printable document to PDF and many other formats. Create professional PDFs with a few clicks and it's free. With many Professional Features: merge documents, send emails and more.
Universal Document Converter - Universal Document Converter has been downloaded by 2+ million users. Get UDC and convert to PDF, JPG, TIFF from Word, Excel and any software that can print.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
pdf995 - pdf995 is the fast, affordable way to create professional-quality documents in the popular PDF file format. (Win 95, 98, 2000 and Me, NT 4. 0 and XP).