PDF Chain is a Graphical User Interface for the PDF Tool Kit.
It includes features designed to handle PDF files in a easy way.
Basicaly it can merge, split, add backgrounds or stamps and add attachments.
There are some tools for extended needs, too.

The GUI is written using GTKmm, a C++ library for GTK.
PDF Chain is released under the terms of the GNU Public License verion 3.
PDF Chain comes without any warranty.