KJA Split and Merge PDF is a useful tool to generate a PDF file from other existing PDF files. It enables to simply order and supress pages coming from original files to the new one. This tool can, among others, be used to merge one signed and scanned page in a document to get a complete signed set. This software is free of use, and made under GPL licence. It uses two pdf libraries: PDFNetlib for the thumbnail images representing each pdf page, and iTextSharp for the PDF result generation.
Very simple and visual software to use: drag and drop your files to modify and merge them. Use simple double clic on a small page picture to get a zoom on it.
All pdf users. This is a very simple software, with no complex menu or difficult use. You'll be able to create your own pdf from imported pdf files in less than 5 min.