PDFCreator is an application that can build PDF files from any program which has a printing function. Besides the fact that PDFCreator creates documents in the PDF format, you can also select PNG, JPEG, BMP, PCX, TIFF, OS, EPS, PSD, PCL, RAW and SVG as output formats. Furthermore, you can combine several documents into one PDF file, and password-protect it.
Additionally, you can email a PDF, use multiple printers, create documents via the command line interface, use multiple profiles, and change its behavior in the settings menu (e.g. use auto-save, print after saving, run a program or a script after saving, set program font).
The program has a well-drawn help file, it is integrated in the Windows context menu (if this option is enabled during installation), and supports several languages, so users can get accustomed to it as fast as possible. Sometimes it takes a long time to perform a task, when you drag and drop a file into the queue, or when you open a window from the menu.
All in all, PDFCreator proves to be a pretty reliable program for printing PDFs. It needs some improvements so that users find it more intuitive (especially newbies), but it uses little memory and gets the job done.