PDFTK Builder - PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use.
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.
PDFTools by SheelApps - PDFTools
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).
PyPDF2 - PyPDF2 - A utility to read and write pdfs with Python
PrimoPDF - Downloaded by 15+ million users. Get Nitro's PDF converter and quickly convert to PDF from 300+ file types. PrimoPDF — the 100% FREE PDF creator! PrimoPDFDownloaded by 15+ million users.