PDFtk - The PDF Toolkit
PDFtk is a simple tool for doing everyday things with PDF documents. It comes in three flavors: PDFtk Free, PDFtk Pro, and our original command-line tool PDFtk Server.
PDFtk 
PDFtk Free is our friendly graphical tool for quickly merging and splitting PDF documents and pages. It is free to use for as long as you like.
Power Users: PDFtk Free comes with our command-line tool, PDFtk Server. So you get both the GUI and the command-line interface to PDFtk!
Now available for Windows XP, Vista, Windows 7 and Windows 8. Download the installer now:
PDFtk 
Use PDFtk Pro to quickly split, merge, rotate, watermark, stamp and secure PDF pages and documents. PDFtk Pro is a graphical application that makes working with PDFs as easy as possible.
Power Users: PDFtk Pro comes with our command-line tool, PDFtk Server. So you get both the GUI and the command-line interface to PDFtk!
Only $3.99!
Now available for Windows XP, Vista, Windows 7 and Windows 8. Purchase PDFtk Pro from our e-commerce site now:
PDFtk 
PDFtk Server is our original command-line tool. It is commonly used for server-side processing of PDFs. It is also used by many PC software publishers to give their products the ability to manipulate PDFs.