Date: 29 April 2010; Recommended by Dr HP Shum, PYNEH, Hong Kong
Publisher's description: "PDF ReDirect is a fast, free, and easy-to-use PDF creator. It has no restrictions, no watermarks, no spyware, no adware, and no pop-up advertisements. Features include encryption, full merging and PDF preview."
My Comments: It is extremely easy to use and fast. It is installed as a virtual printer and can be used in any situation that allows printing.  The output quality is very good.

Download link here
Version tested: 2.2.8
Testing system: MS window 7, 32 bit, AMD Athlon 64 X2 Dual Core Processor 4600+, 2G Ram