PDFCreator is one of the best known programs to create PDF files from any application. Start converting your documents and add encryption with PDFCreator to secure them against modifications.
Create PDFs from any program that is able to print
Security: Encrypt PDFs and protect them from being opened, printed etc
New: Digitally sign your PDFs to ensure that you are the author and the file has not been modified
New: Create PDF/A files for long term archives
Send generated files via email
Create more than just PDFs: PNG, JPG, TIFF, BMP, PCX, PS, EPS
AutoSave files to folders and filenames based on Tags like Username, Computer name, Date, Time etc.
Merge multiple files into one PDF
Easy Install: Just say what you want and everything is installed
Terminal Server: PDFCreator also runs on Terminal Servers without problems
And the best: PDFCreator is free, even for commercial use! It is Open Source and released under the Terms of the GNU General Public License.