CutePDF Writer

CutePDF Writer
Create PDF documents on the fly — for Free!

Portable Document Format (PDF) is the de facto standard for the secure and reliable distribution and exchange of electronic documents and forms around the world.  CutePDF Writer (formerly CutePDF Printer) is the free version of commercial PDF creation software. CutePDF Writer installs itself as a “printer subsystem”. This enables virtually any Windows applications (must be able to print) to create professional quality PDF documents – with just a push of a button!

FREE for commercial and non-commercial use!  No watermarks!  No Popup Web Ads!
CuteWriter.exe
converter.exe

http://www.cutepdf.com/Products/CutePDF/writer.asp