From Joern Schou-Rode:PDFBinder is a simple tool that lets you merge any number of PDF documents into one, without having to resort to slow, user-unfriendly, expensive software. With PDFBinder installed on your workstation, you are able to do anything in PDF.

Example: attach a “print” of a website and a scanned pile of vouchers to your meeting agenda, before you e-mail it as one single PDF document.