PDF Blender is a free cross platform PDF merging tool that utilizes Ghostscript.
- Install the latest Ghostscript, either GNU or AFPL version. (AFPL Ghostscript 8.15 or newer recommended)
- Install PDF Blender
PDF Creator is a free tool to create PDFs easily from nearly any Windows application.
PDF Creator Home Page
iTextFront is an alternative to PDF Blender. It can merge existing PDFs into a single PDF and a lot more. Requires Java.
iTextFront Home Page
GUI for PDFTK is a graphical interface to iText with many of the same features as iTextFront.
GUI for PDFTK Web Site