What are some alternatives?
When comparing Ultra PDF Merger and PDFMerge, you can also consider the following products
PDFMate Free PDF Merger - PDFMate Free PDF Merger works as a PDF Joiner, PDF combiner, PDF breaker, image to PDF converter and PDF encryptor. With PDF Merger, you can batch merging pdf files, combining specified pages or converting scanned image file to create new PDF file.
PDFsam - PDFsam Basic, a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files
PDF-Shuffler - PDF-Shuffler is a small python-gtk application, which helps the user to merge or split pdf...
PDFill - Open, View, Edit, Save and Print PDF Documents without Adobe Acrobat
RoxyApps PDF Merge Tool - Merge multiple files of different formats in a single PDF file
PDFTK Builder - PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use.