PDF Joiner is described as 'This online tool allows you to join several PDF documents into a single file, free of charge. Just upload PDF documents you want to merge together, reorder them with drag-and-drop (if you need) and click 'Join all Files' button'. There are more than 25 alternatives to PDF Joiner, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and iPad. The best alternative is PDFsam, which is both free and Open Source. Other great sites and apps similar to PDF Joiner are PDFTK Builder (Free, Open Source), Master PDF Editor (Freemium), iLovePDF (Freemium) and PDF-Shuffler (Free, Open Source).
Hexonic PDF Split and Merge allows you to easily merge an unlimited number of PDF documents into a single one. With the splitting feature, a new document is created for each single page of the source documents. Hexonic PDF Split and Merge is free for private, non-commercial use.
The PDF merger tool is a free online application to combine two or more PDF files into one document. The PDF merge solution is totally a browser based program that can be used in MAC, Windows and Linux all operating systems.
PDF Mixer is a PDF page tool which mixes pages of 2 or more PDF files, add PDF pages into existing PDF files and save them to a new file. With this powerful tool, you can reorder, copy, rotate, delete, switch and merge pages in multiple PDFs easily.