PrimoPDF 4.1
Windows 98/Me/NT/2000/XP/Vista
No limitations.
Publisher's description of PrimoPDF
Create PDF using PrimoPDF - a free tool for high-quality conversion to PDF, comprising a user-friendly interface that enables printing to PDF from virtually any Windows application. Additionally, PrimoPDF provides the ability to optimize PDF output for screen, print, ebook, and prepress, secure PDF files with 128-bit encryption, and add document information (e.g. title, author, subject, keywords) to converted PDF files. Full support for 64-bit machines, double byte character and non-TrueType font support, and improved PDF output also now available.